Word Origin & History
corkc.1300, from Sp. alcorque "cork sole," prob. from Arabic al-qurq, ult. from L. quercus "oak" or cortex (gen. corticis) "bark." The place in Ireland is Anglicized from Ir. Corcaigh, from corcach "marsh," and is unrelated. The verb "to stop with a cork" is from 1650.