berberecho

cockle

From Ancient Greek βέρβερι (bérberi, “pearl oyster”) or perhaps from a substrate language; otherwise from berbecho (“cockle; goatee”), from a local Vulgar Latin *berbēcclus < *berbēciclus, a diminutive of Latin berbēx ("ram", compare Spanish carnero (“warty venus ((Venus verrucosa); cockle”, literally “ram”))). In any case, related to Portuguese berbigão.