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 History of this Word

origin of "cotter" is not known

"pin" is from "pinn", spoken by people in England during 450-1100 A.D.

Words related to this meaning

grammar is noun

"cotter pin" is a type of fastener

Definition

cotter pin illustration cotter pin illustration A split pin that can be inserted through a hole and then bent to hold something in place. Manufactured with various metals and sizes. Can be straightened and removed.

Examples of how the word is used

cotter pin illustration For centuries before the threaded post came into popularity, the cotter pin fitting was used to fasten posts on cabinetry.
cotter pin illustration The toy bear is fully cotter pin jointed.