Joint n. : The place or part where two things or parts are joined or united; the union of two or more smooth or even surfaces admitting of a close-fitting or junction; junction as, a joint between two pieces of timber; a joint in a pipe.

Joint n. : A joining of two things or parts so as to admit of motion; an articulation, whether movable or not; a hinge; as, the knee joint; a node or joint of a stem; a ball and socket joint. See Articulation.

Joint n. : The part or space included between two joints, knots, nodes, or articulations; as, a joint of cane or of a grass stem; a joint of the leg.

Joint n. : Any one of the large pieces of meat, as cut into portions by the butcher for roasting.

Joint n. : A plane of fracture, or divisional plane, of a rock transverse to the stratification.

Joint n. : The space between the adjacent surfaces of two bodies joined and held together, as by means of cement, mortar, etc.; as, a thin joint.

Joint n. : The means whereby the meeting surfaces of pieces in a structure are secured together.

Joint a. : Joined; united; combined; concerted; as joint action.

Joint a. : Involving the united activity of two or more; done or produced by two or more working together.

Joint a. : United, joined, or sharing with another or with others; not solitary in interest or action; holding in common with an associate, or with associates; acting together; as, joint heir; joint creditor; joint debtor, etc.

Joint a. : Shared by, or affecting two or more; held in common; as, joint property; a joint bond.

Joint v. t. : To unite by a joint or joints; to fit together; to prepare so as to fit together; as, to joint boards.

Joint v. t. : To join; to connect; to unite; to combine.

Joint v. t. : To provide with a joint or joints; to articulate.

Joint v. t. : To separate the joints; of; to divide at the joint or joints; to disjoint; to cut up into joints, as meat.

Joint v. i. : To fit as if by joints; to coalesce as joints do; as, the stones joint, neatly.

Example:
What exactly is Joint custody for children and how can a father get Joint custody in California?

Taxonomy
joints, Arthritis, articulation, ligaments, bones, diarthrosis, synovial joint, movement, functionally, anatomy, free encyclopedia, mobility, surfaces, 01-29, Functional classification, umich, dorsal, collateral.

Defination from the web:
joint is the location at which two or more bones make contact.[1] They are constructed to allow movement and ... Septic arthritis is caused by joint infection. Gouty arthritis is caused by deposition of uric acid crystals in the joint that results in subsequent inflammation. ...