Knee or elbow

noun

1. A part or space included between two articulations, knots, or nodes
2. A place where two things or parts are joined

   "a joint between two pieces of timber"

3. A space between the adjacent surfaces of two bodies (such as bricks) joined and held together (as by cement or mortar)
4. A fracture or crack in rock not accompanied by dislocation
5. The flexing part of a cover along either spine edge of a book
6. The junction of two or more members of a framed structure
7. A union formed by two abutting rails in a track including the elements (such as bars and bolts) necessary to hold the abutting rails together
8. An area at which two ends, surfaces, or edges are attached
9. A shabby or disreputable place of entertainment

   "a cheap joint"

10. Place, establishment

    "a hamburger joint"

11. Prison

    "spent five years in the joint"

12. A marijuana cigarette

    "smoking a joint"

13. A large piece of meat for roasting

    "a joint of beef"

adjective

1. United, combined

   "the joint influences of culture and climate"

2. Shared by or affecting two or more

   "a joint fine"

3. United, joined, or sharing with another (as in a right or status)

   "joint heirs"

4. Being a function of or involving two or more variables and especially random variables

   "a joint probability density function"

verb

1. To unite by a joint fit together

   "joint two boards"

2. To provide with a joint articulate
3. To prepare (something, such as a board) for joining by planing the edge
4. To separate the joints of

   "joint a piece of meat"

5. To fit as if by joints

   "the stones joint neatly"

6. To form joints as a stage in growth

noun phrase

1. A military advisory group composed of the chiefs of staff of the army and air force, the chief of naval operations, and sometimes the commandant of the marine corps

noun

1. A compound made of gypsum, clay, and latex resin that is used to seal wall joints or fill shallow holes

noun

1. A resolution passed by both houses of a legislative body that has the force of law when signed by or passed over the veto of the executive

noun

1. A company or association consisting of individuals organized to conduct a business for gain and having a joint stock of capital represented by shares owned individually by the members and transferable without the consent of the group

noun

1. An account (as in a bank) that more than one person can use

   "My wife and I keep our money in a joint account."

noun

1. Custody (the legal right to take care of a child) shared by two people

   "The divorced parents have joint custody."

noun

1. A joint in which a ball moves within a socket so as to allow rotary motion in every direction within certain limits
2. An articulation (such as the hip joint) in which the rounded head of one bone fits into a cuplike cavity of the other and admits movement in any direction