Meaning

noun common edible European bivalve

noun common edible, burrowing European bivalve mollusk that has a strong, rounded shell with radiating ribs

verb stir up (water) so as to form ripples

originFrom Middle English cokel, cokkel, kokkel, cocle, of uncertain origin. Perhaps a diminutive of Middle English cokke, cok (“cockle”), from Old English cocc (found in sǣcocc (“cockle”)) + -le; or perhaps from Old French coquille, from Vulgar Latin *cocchilia, from conchylia, from Ancient Greek κογχύλιον (konkhúlion), diminutive of κογχύλη (konkhúlē, “mussel”), of Pre-Greek substrate origin.

Etymology from Wiktionary, CC BY-SA 3.0