Definify.com
Webster 1913 Edition
Cotter
Cot′ter
(kŏt′tẽr)
, Noun.
1.
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
. 2.
A toggle.
Cot′ter
,Verb.
T.
To fasten with a cotter.
Webster 1828 Edition
Cotter
COTTER
, COTTAR or COTTIER,Noun.