[cork] n [ME, cork, bark, prob. fr. Ar qurq, fr. L cortic-, cortex bark--more at cuirass] (14c) 1 a: the elastic tough outer tissue of the cork oak that is used esp. for stoppers and insulation b: phellem
2: a usu. cork stopper for a bottle or jug
3: a fishing float
[2]cork vt (1535) 1: to furnish or fit with cork or a cork
2: to stop up with a cork
3: to blacken with burnt cork