a. A place or part at which two or more things are joined.
b. A way in which two or more things are joined: a mortise-and-tenon joint.
a. A point of articulation between two or more bones, especially such a connection that allows motion.
b. A point in the exoskeleton of an invertebrate at which movable parts join, as along the leg of an arthropod.
3. Botany An articulation on a fruit or stem, such as the node of a grass stem.
4. Geology A fracture or crack in a rock mass along which no appreciable movement has occurred.
5. A large cut of meat for roasting.
a. A cheap or disreputable gathering place: "The tavern is ... just a joint with Formica tables, a vinyl floor, lights over the mirrors" (Scott Turow).
b. A building or dwelling.
c. A prison. Often used with the.
7. Slang A marijuana cigarette.
8. Vulgar Slang A penis.
1. Shared by or common to two or more: our joint presence; a joint income-tax return.
2. Sharing with another or others: a joint tenant.
3. Formed or characterized by cooperation or united action: joint military maneuvers.
4. Involving both houses of a legislature: a joint session of Congress.
5. Law Regarded as one, especially with regard to tort liability or interest in property.
6. Mathematics Involving two or more variables.
tr.v. joint·ed, joint·ing, jointsIdiom:
1. To combine or attach with a joint or joints: securely jointed the sides of the drawer.
2. To provide or construct with joints: joint a boom on a crane.
3. To separate (meat) at the joints.
out of joint
1. Dislocated, as a bone.
a. Not harmonious; inconsistent.
b. Out of order; inauspicious or unsatisfactory.
c. In bad spirits or humor; out of sorts.
[Middle English, from Old French, from past participle of joindre, to join; see JOIN.]
(click for a larger image)joint
top to bottom: end-lap, doweled, and spline joints
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.