Meaning

noun outer bark of the cork oak; used for stoppers for bottles etc.

noun (botany) outer tissue of bark; a protective layer of dead cells

noun a port city in southern Ireland

originFrom Middle English cork (“oak bark, cork”), from Middle Dutch curc (“cork (material or object)”), either from Spanish corcho (“cork (material or object)”) (also corcha or corche) or from Old Spanish alcorque (“cork sole”). Doublet of cortex.

Etymology from Wiktionary, CC BY-SA 3.0