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From Biology-Online Dictionary | Biology-Online Dictionary
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a male cat; a tomcat.

Origin: Abbreviated fr. Gilbert, the name of the cat in the old story of Reynard the fox. In the Romaunt of the rose, etc.

a piece or slip of metal or wood, notched or otherwise, in a machine or structure, to hold other parts in Place or bind them together, or to afford a bearing surface; usually held or adjusted by means of a wedge, key, or screw.

(Science: engineering) gib and key, or gib and cotter, the fixed wedge or gib, and the driving wedge,key, or cotter, used for tightening the strap which holds the brasses at the end of a connecting rod.

Origin: Etymol. Uncertain.