colloq. [app. f. COCK v.1
Ir. and Gaelic caog ‘wink,’ and esp. caogshuil ‘squint eye,’ caogshuileach ‘squint-eyed,’ have been compared; but no historical connection is known, and the pronunciation of caog differs considerably from that of cock.]
a. 1825. Forby, Voc. E. Anglia, Cock-eye, a squinting eye; which must be set or cocked, like the lock of a gun, before aim can be taken at an object.
1877. N. W. Lincolnsh. Gloss., Cock-eye, one who squints. She’s a real cock-eye.
