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  • bolt
    bolt
    noun
    a movable bar or rod that when slid into a socket fastens a door, gate, etc.
  • Bolt
    Bolt
    noun
    Robert ( Oxton ). 1924–95, British playwright. His plays include A Man for All Seasons (1960) and he also wrote a number of screenplays
Synonyms

bolt

1 American  
[bohlt] / boʊlt /

noun

bolts plural
  1. a movable bar or rod that when slid into a socket fastens a door, gate, etc.

  2. the part of a lock that is shot from and drawn back into the case, as by the action of the key.

  3. any of several types of strong fastening rods, pins, or screws, usually threaded to receive a nut.

  4. a sudden dash, run, flight, or escape.

  5. a sudden desertion from a meeting, political party, social movement, etc.

  6. a length of woven goods, especially as it comes on a roll from the loom.

  7. a roll of wallpaper.

  8. Bookbinding. the three edges of a folded sheet that must be cut so that the leaves can be opened.

  9. a rod, bar, or plate that closes the breech of a breechloading rifle, especially a sliding rod or bar that shoves a cartridge into the firing chamber as it closes the breech.

  10. a jet of water, molten glass, etc.

  11. an arrow, especially a short, heavy one for a crossbow.

  12. a shaft of lightning; thunderbolt.

  13. a length of timber to be cut into smaller pieces.

  14. a slice from a log, as a short, round piece of wood used for a chopping block.


verb (used with object)

  1. to fasten with or as with a bolt.

  2. to discontinue support of or participation in; break with.

    to bolt a political party.

  3. to shoot or discharge (a missile), as from a crossbow or catapult.

  4. to utter hastily; say impulsively; blurt out.

  5. to swallow (one's food or drink) hurriedly.

    She bolted her breakfast and ran to school.

  6. to make (cloth, wallpaper, etc.) into bolts.

  7. Fox Hunting. (of hounds) to force (a fox) into the open.

verb (used without object)

  1. to make a sudden, swift dash, run, flight, or escape; spring away suddenly.

    The rabbit bolted into its burrow.

    Synonyms:
    bound, flee, scoot, speed, fly, run, rush, dash
  2. to break away, as from one's political party.

  3. to eat hurriedly or without chewing.

  4. Horticulture. to produce flowers or seeds prematurely.

adverb

  1. Archaic. with sudden meeting or collision; suddenly.

idioms

  1. bolt upright, stiffly upright; rigidly straight.

    The explosive sound caused him to sit bolt upright in his chair.

  2. bolt from the blue, a sudden and entirely unforeseen event: Also bolt out of the blue.

    His decision to leave college was a bolt from the blue for his parents.

  3. shoot one's bolt, to make an exhaustive effort or expenditure.

    The lawyer shot his bolt the first day of the trial and had little to say thereafter.

bolt 2 American  
[bohlt] / boʊlt /

verb (used with object)

  1. to sift through a cloth or sieve.

  2. to examine or search into, as if by sifting.


bolt 1 British  
/ bəʊlt /

noun

  1. a bar that can be slid into a socket to lock a door, gate, etc

  2. a bar or rod that forms part of a locking mechanism and is moved by a key or a knob

  3. a metal rod or pin that has a head at one end and a screw thread at the other to take a nut

  4. a sliding bar in a breech-loading firearm that ejects the empty cartridge, replaces it with a new one, and closes the breech

  5. a flash of lightning

  6. a sudden start or movement, esp in order to escape

    they made a bolt for the door

  7. a sudden desertion, esp from a political party

  8. a roll of something, such as cloth, wallpaper, etc

  9. an arrow, esp for a crossbow

  10. printing a folded edge on a sheet of paper that is removed when cutting to size

  11. mechanical engineering short for expansion bolt

  12. a sudden, unexpected, and usually unwelcome event

  13. to exhaust one's effort

    the runner had shot his bolt

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. (tr) to secure or lock with or as with a bolt or bolts

    bolt your doors

  2. (tr) to eat hurriedly

    don't bolt your food

  3. (intr; usually foll by from or out) to move or jump suddenly

    he bolted from the chair

  4. (intr) (esp of a horse) to start hurriedly and run away without warning

  5. (tr) to roll or make (cloth, wallpaper, etc) into bolts

  6. to desert (a political party, etc)

  7. (intr) (of cultivated plants) to produce flowers and seeds prematurely

  8. (tr) to cause (a wild animal) to leave its lair; start

    terriers were used for bolting rats

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adverb

  1. stiffly, firmly, or rigidly (archaic except in the phrase bolt upright )

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Bolt 2 British  
/ bəʊlt /

noun

  1. Robert ( Oxton ). 1924–95, British playwright. His plays include A Man for All Seasons (1960) and he also wrote a number of screenplays

  2. Usain (juːˈseɪn). born 1986, Jamaican athlete: winner of the 100 metres and the 200 metres in the 2008 Olympic Games, setting world records at both distances

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

bolt 3 British  
/ bəʊlt /

verb

  1. to pass (flour, a powder, etc) through a sieve

  2. to examine and separate

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

bolt More Idioms  

    More idioms and phrases containing bolt


Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of bolt1

First recorded before 1000; Middle English noun bolt, bold, bote “(crossbow) bolt, (lightning) bolt, (door) bolt, (cloth) bolt,” Old English bolt “arrow, (crossbow) bolt, catapult”; cognate with Dutch bout, German Bolz

Origin of bolt2

First recorded in 1150–1200; Middle English bulten, bolten, bouten, from Old French bul(e)ter, variant of unrecorded buteler, from Germanic; compare Middle High German biuteln “to sift,” derivative of biutel, Old High German būtil “bag,” whence German Beutel

Explanation

We love words that sound like what they mean, and bolt is no exception. It's a quick, sharp word that either means to move quickly or refers to a stroke of lightning, as in "lightning bolt." The god Zeus was fond of tossing bolts of lightning down upon mortals who angered him. If you were one of those mortals, you'd have been smart to bolt inside as soon as the rain began. To bolt is to run as quickly as you can. Racehorses are often described as bolting out of the gate. Other uses of bolt include the lock in your door, the act of locking that lock, and what a dog does when it gulps down his food.

Keep Reading on Vocabulary.com

Vocabulary lists containing bolt

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Fireworks are also traumatizing for pets, particularly dogs, which tremble and even bolt from their homes in fear.

From Barron's Jul. 2, 2026

Whether the form has legs, wheels or a tower, it still needs actuators, sensors, edge compute, safety systems and someone to bolt it into a line.

From MarketWatch Jul. 1, 2026

The backstory of the works by the composers who perished is obviously compelling, but the lightning bolt that struck Conlon first was the music.

From Los Angeles Times Jun. 18, 2026

Brazil's Vinicius Jr fires home a "lightning bolt" of a strike to level up the scores in against Morocco in their Group C match in the 2026 World Cup.

From BBC Jun. 13, 2026

He had dark skin and cropped hair, and he looked like he was ready to bolt for the door.

From "City Spies" by James Ponti

Phil Wicks can remember the likes of Usain Bolt descending on a packed stadium in south London for a glittering evening of athletics.

From BBC Jul. 11, 2026

Most other comparably priced EVs in the U.S. are closer to $30,000, including the 2027 Chevrolet Bolt, which Car and Driver named its most affordable EV.

From MarketWatch Jun. 24, 2026

The Bolt is set to be discontinued next year, and Nissan has pulled its cheapest Leaf variant from the U.S.

From The Wall Street Journal Jun. 24, 2026

Ride-hailing platforms Uber, Lyft and Bolt often partner in such projects.

From Barron's Jun. 7, 2026

"Now, Mr. Better Than Bolt, get back on the line."

From "Ghost" by Jason Reynolds

The small nocturnal arachnid has been nicknamed the ballista spider after the ancient Roman siege weapon that launched bolts and stones using stored tension.

From Science Daily Jun. 26, 2026

“If you don’t know the ins and outs and nuts and bolts inside City Hall, how are you going to be mayor?” he said.

From Los Angeles Times May 1, 2026

The concrete, honeycomb-style installations are attached to the wall by metal bolts - and they have been inspired by the success of vertipools in the Isle of Wight.

From BBC Apr. 27, 2026

As well as using new technology, Cambridge has turned to more simple efficiencies: Its missiles use just two types of bolts.

From The Wall Street Journal Mar. 30, 2026

Wrestling wildly with the stout bars and bolts, he managed somehow to open the small iron door.

From "Redwall" by Brian Jacques

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