(kok′əl) noun
1. An edible European bivalve mollusk (Cardium edule).
2. The cockleshell.
3. A confection made with sugar and flour.
4. The fire chamber or dome of a hot–air furnace.
5. A shallow boat.
—cockles of one's heart The depths or bottom of one's heart, or feelings.
—v.t. & v.i. cock·led, cock·ling To wrinkle; pucker. [<F coquille <L conchylium shell <Gk. conchylion, dim. of conchylē shell, mussel]

(kok′əl) noun
A grass that grows among grain; the darnel. [OE coccel]