I. ˈkä-kəl noun
Etymology: Middle English, from Old English coccel
Date: before 12th century
: any of several weedy plants of the pink family ; especially : corn cockle
II. noun
Etymology: Middle English cokille, from Middle French coquille shell, modification of Latin conchylia, plural of conchylium, from Greek konchylion, from konchē conch
Date: 14th century
1. : any of various chiefly marine bivalve mollusks (family Cardiidae) having a shell with convex radially ribbed valves ; especially : a common edible European bivalve ( Cerastoderma edule syn. Cardium edule )
2. : cockleshell
III. noun
Etymology: Middle English kokell, ultimately from Middle French coquillé wavy or rounded like a shell, from coquille
Date: 15th century
: pucker , wrinkle
• cockle verb