A bivalve mollusk, with radiating ribs, of the genus Cardium, especially C. edule, used in Europe for food; -- sometimes applied to similar shells of other genera.
- Any of various bivalve mollusks of the family Cardiidae, having rounded or heart-shaped shells with radiating ribs.
- The shell of a cockle.
- A wrinkle; a pucker.
- Nautical A cockleshell.
- To become or cause to become wrinkled or puckered.
- cockles of (one's) heart One's innermost feelings: The valentine warmed the cockles of my heart.
- Any of several weedy plants, especially the corn cockle.