Nouns

(n)joint, articulation, articulatio(anatomy) the point of connection between two bones or elements of a skeleton (especially if it allows motion)
(n)jointa disreputable place of entertainment
(n)articulation, join, joint, juncture, junctionthe shape or manner in which things come together and a connection is made
(n)roast, jointa piece of meat roasted or for roasting and of a size for slicing into more than one portion
(n)jointjunction by which parts or objects are joined together
(n)joint, marijuana cigarette, reefer, stick, spliffmarijuana leaves rolled into a cigarette for smoking

Verbs

(v)jointfit as if by joints“The boards fit neatly”
(v)joint, articulateprovide with a joint“the carpenter jointed two pieces of wood”
(v)jointfasten with a joint
(v)jointseparate (meat) at the joint

Adjectives

(a)jointunited or combined“a joint session of Congress”, “joint owners”
(s)jointaffecting or involving two or more“joint income-tax return”, “joint ownership”
(s)jointinvolving both houses of a legislature“a joint session of Congress”