"Cotter" is a word in ENGLISH

cotter ENGLISH
Definition:

To fasten with a cotter.

cotter ENGLISH
Definition:

A piece of wood or metal, commonly wedge-shaped, used for
fastening together parts of a machine or structure. It is driven into
an opening through one or all of the parts. [See Illust.] In the United
States a cotter is commonly called a key.

cotter ENGLISH
Definition:

Alt. of Cottar

cotter ENGLISH
Definition:

A toggle.

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but ENGLISH

The end of a connecting rod or other like piece, to which the boxing is attached by the strap, cotter, …

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cotland ENGLISH

Land appendant to a cot or cottage, or held by a cottager or cotter.

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forelock ENGLISH

A cotter or split pin, as in a slot in a bolt, to prevent retraction; a linchpin; a pin fastening …

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key ENGLISH

A wedge to unite two or more pieces, or adjust their relative position; a cotter; a forelock.

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keyhole ENGLISH

a mortise for a key or cotter.

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