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  • beaver
    beaver
    noun
    a large, amphibious rodent of the genus Castor, having sharp incisors, webbed hind feet, and a flattened tail, noted for its ability to dam streams with trees, branches, etc.
  • Beaver
    Beaver
    noun
    a member of a Beaver Colony , the youngest group of boys (aged 6–8 years) in the Scout Association
Synonyms

beaver

1 American  
[bee-ver] / ˈbi vər /

noun

beavers, plural beaver plural
  1. a large, amphibious rodent of the genus Castor, having sharp incisors, webbed hind feet, and a flattened tail, noted for its ability to dam streams with trees, branches, etc.

  2. the fur of this animal.

  3. a flat, round hat made of beaver fur or a similar fabric.

  4. a tall, cylindrical hat for men, formerly made of beaver and now of a fabric simulating this fur.

  5. Informal. a full beard or a man wearing one.

  6. Informal. an exceptionally active or hard-working person.

  7. Slang: Vulgar.

    1. a woman's pubic area.

    2. Offensive. a term used to refer to a woman.

  8. Textiles.

    1. a cotton cloth with a thick nap, used chiefly in the manufacture of work clothes.

    2. (formerly) a heavy, soft, woolen cloth with a thick nap, made to resemble beaver fur.

  9. none Beaver a native or inhabitant of Oregon, the Beaver State (used as a nickname).


verb (used without object)

beavers, present (3rd person singular) beavered, past participle, past beavering present participle
  1. British. to work very hard or industriously at something (usually followed byaway ).

beaver 2 American  
[bee-ver] / ˈbi vər /

noun

Armor.
  1. a piece of plate armor for covering the lower part of the face and throat, worn especially with an open helmet, as a sallet or basinet.

  2. a piece of plate armor, pivoted at the sides, forming part of a close helmet below the visor or ventail.


beaver 1 British  
/ ˈbiːvə /

noun

  1. a large amphibious rodent, Castor fiber , of Europe, Asia, and North America: family Castoridae . It has soft brown fur, a broad flat hairless tail, and webbed hind feet, and constructs complex dams and houses (lodges) in rivers

  2. the fur of this animal

  3. a burrowing rodent, Aplodontia rufa , of W North America: family Aplodontidae

  4. a tall hat of beaver fur or a fabric resembling it, worn, esp by men, during the 19th century

  5. a woollen napped cloth resembling beaver fur, formerly much used for overcoats, etc

  6. a greyish- or yellowish-brown

  7. obsolete a full beard

  8. a bearded man

  9. (modifier) having the colour of beaver or made of beaver fur or some similar material

    a beaver lamb coat

    a beaver stole

"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. to work industriously or steadily

"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
Beaver 2 British  
/ ˈbiːvə /

noun

  1. a member of a Beaver Colony , the youngest group of boys (aged 6–8 years) in the Scout Association

"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

beaver 3 British  
/ ˈbiːvə /

noun

  1. a movable piece on a medieval helmet used to protect the lower part of the face

"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

beaver Idioms  

Sensitive Note

Beaver as a term for a woman is perceived as insulting because it refers to the female in sexual terms. However, in the 1970s, it was CB radio slang, neutral in connotation and even used by women themselves as a term of self-reference.

Other Word Forms

Derived Forms

Inflected Forms

Nouns

Participles

Conjugated Forms

Present

Past

Future

Etymology

Origin of beaver1

First recorded before 1000; Middle English bever, Old English beofor, befor; cognate with German Biber, akin to Lithuanian bebrùs, Russian bobr, Latin fiber, Sanskrit babhrús “reddish brown,” also an animal resembling a mongoose

Origin of beaver2

First recorded in 1400–50; late Middle English bavier, bavour, beaver, from Middle French baviere ( Old French: “child's bib”), equivalent to bave “spit, dribble” + -iere, from Latin -āria, feminine of -ārius -ary; alteration of vowel in the initial syllable is due to confusion with beaver hat

Explanation

A beaver is a water- and land-dwelling animal with a very broad tail, short fur, and prominent front teeth. Beavers are famous for their ability to build dams across rivers and streams. Beavers are actually rodents, so they are related to mice and rats, though they're much larger. Their long teeth make it possible for them to chew through even broad tree trunks, felling them across bodies of water to create dams. This provides the beavers with a safe home or lodge, protected by the ponds they've created and usually accessible only underwater. The word beaver has a Proto-Indo-European root that means "brown" or "bright."

Keep Reading on Vocabulary.com

Vocabulary lists containing beaver

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:

Among other things, the beaver and moose are both “facing right with wide eyes and a smile,” it notes in a lawsuit filed this year.

From The Wall Street Journal Jul. 9, 2026

Eleanor Nash, community ranger at Forestry England, said beaver kits were nursed for about two to three months.

From BBC Jul. 1, 2026

Soccer fans visiting a very large gas station for the first time… carry-on BBQ sandwiches & beaver nuggets?

From Salon Jun. 28, 2026

Montreal’s mascot was Amik, the industrious Canadian beaver.

From Los Angeles Times Jun. 6, 2026

But there was a log extending about twenty feet out into the water of the lake—a beaver drop from some time before—with old limbs sticking up, almost like handles.

From "Hatchet" by Gary Paulsen

“Behind the friendly, cap-wearing Beaver with the goofy smile is a hit-style trademark enforcement legal team that is slowly taking-out cartoon animals one by one,” trademark attorney Alice Denenberg wrote in an online post.

From The Wall Street Journal Jul. 9, 2026

One of six large wildfires burning in Utah, it severely damaged the Eagle Point ski resort in Beaver County.

From Los Angeles Times Jun. 26, 2026

The licence was granted by Natural England, secured in partnership with the Beaver Trust.

From BBC Apr. 7, 2026

Beaver is one of those manosphere gurus who preside over dismal power-of-positive-thinking seminars in hotel conference rooms where lost men gather for advice on how to win.

From The Wall Street Journal Mar. 26, 2026

Mr. Beaver moved his lips, but no words came out.

From "The Wild Robot" by Peter Brown

A colony of beavers reintroduced to an area of west London has helped prevent a railway station from flooding, according to the project behind their return.

From BBC Jul. 1, 2026

The beavers slow the flow of water during downpours and create wetlands that hold it back, easing pressure on the drainage system further downstream.

From BBC Jul. 1, 2026

Termites construct skyscrapers and beavers build majestic dams.

From The Wall Street Journal Jun. 19, 2026

In Yellowstone National Park, their return has been praised with reducing the overabundant elk population and allowing decimated trees such as willows and aspen to recover, which subsequently brought the return of beavers and songbirds.

From Los Angeles Times May 16, 2026

They talked about beavers and worms and then came to the second Blue’s clue — an iceberg.

From "The Tipping Point" by Malcolm Gladwell

If Musk had quietly beavered away on something that might have helped, that would have been one thing, but that isn’t Musk’s style – he happily admits to his own arrogance.

From The Guardian Jul. 17, 2018

For two months, they beavered away at the problem.

From Slate Jun. 9, 2014

There were issues of "privacy" and "commercial confidentiality" here apparently, as big hackers beavered away untouched.

From The Guardian Jul. 28, 2013

"They have beavered away trying this and trying that and the formulations have changed over the last 50 years, but not radically."

From BBC Apr. 11, 2011

He is a most industrious small chopper, and the other day gnawed down, or as the children call it, "beavered" down, a misshapen tulip tree, which was about fifty feet high.

From Letters to His Children by Roosevelt, Theodore

A detective, in the form of a Firmin scholar, is beavering around.

From New York Times May 1, 2023

Adam Le Doux, the creator of the game-making software, was working as a programmer at Microsoft while beavering away on creative projects in his spare time.

From The Verge Mar. 7, 2022

Hewlett, meanwhile, has been beavering away at his home in Paris.

From BBC Dec. 9, 2020

Still, alphas from Yale or Harvard aren’t likely to be happy beavering away on projects that never reach fruition.

From Washington Post Aug. 11, 2017

"Tain t as bad as beavering," answered Sam.

From Two Little Savages Being the adventures of two boys who lived as Indians and what they learned by Seton, Ernest Thompson

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