(guj′ən) noun
1. An Old World, carplike, fresh–water fish (genus Gobio), very easily caught.
2. A minnow.
3. A simpleton.
4. Anything swallowed credulously; bait.
—v.t. To impose upon; cheat; dupe. [<OF goujon <L gobio, var. of gobios. See GOBY.]

(guj′ən) noun
1. Mech. The bearing of a shaft, especially when made of a separate piece.
2. A metallic journal piece let into the end of a wooden shaft. [<OF gougeon pin of a pulley]