joint pin
131swivel gun — Swivel Swiv el, n. [AS. sw[=i]fan to move quickly, to remove; akin to Icel. sveifla to whirl, shake, sv[=i]fa to ramble, to turn. See {Swoop}, and cf. {Swift} a reel, {Swift}, a.] 1. (Mech.) A piece, as a ring or hook, attached to another piece… …
132Swivel hook — Swivel Swiv el, n. [AS. sw[=i]fan to move quickly, to remove; akin to Icel. sveifla to whirl, shake, sv[=i]fa to ramble, to turn. See {Swoop}, and cf. {Swift} a reel, {Swift}, a.] 1. (Mech.) A piece, as a ring or hook, attached to another piece… …
