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[joint] /dʒɔɪnt/
the place at which two things, or separate parts of one thing, are joined or united, either rigidly or in such a way as to permit motion; juncture.
a connection between pieces of wood, metal, or the like, often reinforced with nails, screws, or glue.
Anatomy, Zoology.
  1. the movable or fixed place or part where two bones or elements of a skeleton join.
  2. the form or structure of such a part, as a ball-and-socket, hinge, pivot, etc.
Chiefly British. one of the large portions into which a section of meat is divided by a butcher, as the shoulder or leg, especially as served at a dining table.
Slang.. Also called jay2 . a marijuana cigarette.
  1. a dirty, cheap, or disreputable place of public accommodation or entertainment, especially a restaurant or nightclub.
  2. a place or establishment, as a hotel, restaurant, etc.:
    We stayed in a very classy joint near the ocean.
  1. a part, especially of a plant, insect, etc., connected with another part by an articulation, node, or the like.
  2. a portion between two articulations, nodes, or the like.
Botany. the part of a stem from which a branch or leaf grows; node.
Geology. a fracture plane in rocks, generally at right angles to the bedding of sedimentary rocks and variously oriented in igneous and metamorphic rocks, commonly arranged in two or more sets of parallel intersecting systems.
Mathematics. knot1 (def 12).
the joint, Slang. prison:
He got out of the joint just before Christmas.
Slang: Vulgar. penis.
shared by or common to two or more:
a joint obligation.
undertaken or produced by two or more in conjunction or in common:
a joint reply; a joint effort.
sharing or acting in common:
joint members of a committee.
joined or associated, as in relation, interest, or action:
joint owners.
Law. joined together in obligation or ownership:
joint heirs.
of or relating to both branches of a bicameral legislature.
pertaining to or noting diplomatic action in which two or more governments are formally united.
verb (used with object)
to unite by a joint or joints.
to form or provide with a joint or joints.
to cut (a fowl, piece of meat, etc.) at the joint; divide at a joint; separate into pieces at the joints:
to joint a chicken.
  1. to prepare (a board or the like) for fitting in a joint.
  2. to true the bottom of (a wooden plane body) to allow even movement along the surface of the work.
to file the teeth of (a saw) to uniform height.
Masonry. to finish (a mortar joint), as by striking.
verb (used without object)
to fit together by or as if by joints:
The cinder blocks jointed neatly.
out of joint,
  1. dislocated, as a bone.
  2. in an unfavorable state; inauspicious:
    The time is out of joint.
  3. out of keeping; inappropriate:
    Such behavior seems wholly out of joint with their fine upbringing.
Origin of joint
1250-1300; 1900-05 for def 6; Middle English < Old French joint, jointe < Latin junctum, juncta, neuter and feminine of junctus (past participle of jungere “to join”), equivalent to jung- join + -tus past participle suffix
Related forms
subjoint, noun
14. united, combined, collaborative. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for joint
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British Dictionary definitions for joint


a junction of two or more parts or objects
the part or space between two such junctions
(anatomy) the junction between two or more bones, usually formed of connective tissue and cartilage
the point of connection between movable parts in invertebrates, esp insects and other arthropods related adjective articular
the part of a plant stem from which a branch or leaf grows
one of the parts into which a carcass of meat is cut by the butcher, esp for roasting
(geology) a crack in a rock along which no displacement has occurred
  1. a disreputable establishment, such as a bar or nightclub
  2. (often facetious) a dwelling or meeting place
(slang) a cannabis cigarette
out of joint
  1. dislocated
  2. out of order or disorganized
put someone's nose out of joint, See nose (sense 18)
shared by or belonging to two or more: joint property
created by combined effort
sharing with others or with one another: joint rulers
(law) (of persons) combined in ownership or obligation; regarded as a single entity in law
verb (transitive)
to provide with or fasten by a joint or joints
to plane the edge of (a board, etc) into the correct shape for a joint
to cut or divide (meat, fowl, etc) into joints or at a joint
Derived Forms
jointly, adverb
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
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Word Origin and History for joint

late 13c., "a part of a body where two bones meet and move in contact with one another," from Old French joint "joint of the body" (12c.), from Latin iunctus "united, connected, associated," past participle of iungere "join" (see jugular). Related: Joints. Slang meaning of "place, building, establishment" (especially one where persons meet for shady activities) first recorded 1877, American English, from an earlier Anglo-Irish sense (1821), perhaps on the notion of a side-room, one "joined" to a main room. The original U.S. sense was especially of "an opium-smoking den."

Meaning "marijuana cigarette" (1938) is perhaps from notion of something often smoked in common, but there are other possibilities; earlier joint in drug slang meant "hypodermic outfit" (1935). Meaning "prison" is attested from 1953 but probably is older. Out of joint in the figurative sense is from early 15c. (literally, of bone displacement, late 14c.).


early 15c., "united," from Old French jointiz (adj.) and joint, literally "joined," past participle of joindre (see join (v.)).

Online Etymology Dictionary, © 2010 Douglas Harper
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joint in Medicine

joint (joint)
A point of articulation between two or more bones, especially such a connection that allows motion.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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joint in Science

  1. Anatomy A usually movable body part in which adjacent bones are joined by ligaments and other fibrous tissues. See also ball-and-socket joint, hinge joint.

  2. Zoology A point in the exoskeleton of an invertebrate at which movable parts join, as along the leg of an arthropod.

  3. Botany A point on a plant stem from which a leaf or branch grows.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Slang definitions & phrases for joint



  1. Any disgusting or disreputable place; dive, dump: That evening the joint buzzed with sedition/ a vile Kansas ''joint'' (1821+)
  2. Any place or venue, including a home: It's a swell joint, all right (1905+)
  3. A marijuana cigarette; reefer: inhale a joint or two of cannabis/ I've had to hold joints in my hand but I never smoked even one (1950s+ Narcotics)
  4. The apparatus for injecting narcotics; head kit, works (1940s+ Narcotics)
  5. The penis (1960s+)
  6. A concession (1940s+ Carnival)

Related Terms

beer joint, the big joint, call house, clip joint, creep-joint, eat high on the hog, grease joint, gyp joint, ham joint, hopjoint, juke joint, pull one's pud, put someone's nose out of joint, rib joint, schlock shop, square

[place senses fr early 1800s Anglo-Irish joint, ''low resort,'' perhaps from its being a nearby, joined room rather than a main room]

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Idioms and Phrases with joint
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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