1. Any of various chiefly marine bivalve mollusks of the family Cardiidae, having rounded or heart-shaped shells with radiating ribs.
2. The shell of a cockle.
3. A wrinkle; a pucker.
To become or cause to become wrinkled or puckered.
Any of several weedy plants, especially the corn cockle.
They have not cockled before and are using their own type of equipment which is bringing up the very small cockles which we are all trying to save for the sake of the environment and for next year's harvest.