a hooked prolongation that develops during the spawning season on the lower jaw of a male salmon or trout.
2. Machinery. a.
a thin, wedgelike strip of metal for controlling the area in which
a moving part, as the table of a milling machine, slides.
a keylike part having a head at each end, used with a matching cotter as a fastening. See diag. under exploded view
(in carpentry or ironwork) a heavy metal strap for fastening two members together.
verb (used with object)
to fasten (parts) together by means of a gib.
1555–65; origin uncertain