a hooked prolongation that develops during the spawning season on the lower jaw of a male salmon or trout.

Machinery .

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.

(in carpentry or ironwork) a heavy metal strap for fastening two members together.

to fasten (parts) together by means of a gib.