Webster's English Dictionary

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joint

1. joint \'jo.int\ \-*d\ n [ME jointe, fr. OF, fr. joindre] 1a1: the point 
   of contact between elements of an animal skeleton with the p arts that 
   surround and support it 1a2: NODE  1b: a part or space included between two 
   articulations, knots, or nodes  1c: a large piece of meat for roasting  2a: 
   a place where two things or parts are joined  2b: a space between the 
   adjacent surfaces of two bodies joined and held tog ether by cement, 
   mortar, or other material 2c: a fracture or crack in rock not accompanied 
   by dislocation  2d: the flexing part of a cover along either backbone edge 
   of a book  2e: the junction of two or more members of a framed structure  
   2f: a union formed by two abutting rails in a track including the bars, bol 
   ts, and other elements necessary to hold the abutting rails together 2g: an 
   area at which two ends, surfaces, or edges are attached  3a: a shabby or 
   disreputable place of entertainment  3b: PLACE, ESTABLISHMENT  1a: 
   DISLOCATED  1b: at variance  2a: DISORDERED  2b: DISSATISFIED  - joint.ed 
   aj
2. joint aj [ME, fr. MF, fr. pp. of joindre] 1: UNITED, COMBINED  2: common 
   to two or more : as  2a1: involving the united activity of two or more  
   2a2: constituting an activity, operation, or organization in which element 
   s of more than one armed service participate 2a3: constituting an action or 
   expression of two or more governments  2b: shared by or affecting two or 
   more  3: united, joined, or sharing with another 
3. joint vb [1joint] 1a: to unite by a joint  1b: to provide with a joint  
   1c: to prepare (as a board) for joining by planing the edge  2: to separate 
   the joints of  1: to fit as if by joints  2: to form joints as a stage in 
   growth