The Collaborative International Dictionary of English v.0.48:
Cock \Cock\ (k[o^]k), v. t. [imp. & p. p. Cocked (k[o^]kt); p.
pr. & vb. n. Cocking.] [Cf. Gael. coc to cock.]
1. To set erect; to turn up.
Our Lightfoot barks, and cocks his ears. --Gay.
Dick would cock his nose in scorn. --Swift.
2. To shape, as a hat, by turning up the brim.
3. To set on one side in a pert or jaunty manner.
They cocked their hats in each other's faces.
4. To turn (the eye) obliquely and partially close its lid,
as an expression of derision or insinuation.
(a) A hat with large, stiff flaps turned up to a peaked
crown, thus making its form triangular; -- called also
(b) A game similar to ninepins, except that only three
pins are used, which are set up at the angles of a