Source : Webster's Revised Unabridged Dictionary (1913)

Cockle \Coc"kle\, n. [AS. coccel, cocel; cf. Gael. cogall tares,
   husks, cockle.] (Bot.)
   (a) A plant or weed that grows among grain; the corn rose
       ({Luchnis Githage}).
   (b) The {Lotium}, or darnel.