Meaning of CLAM in English

CLAM

n. & v.

--n.

1. any bivalve mollusc, esp. the edible N. American hard or round clam (Mercenaria mercenaria) or the soft or long clam (Mya arenaria).

2 colloq. a shy or withdrawn person.

--v.intr. (clammed, clamming)

1. dig for clams.

2 (foll. by up) colloq. refuse to talk.

Etymology: 16th c.: app. f. clam a clamp

Oxford English vocab.      Оксфордский английский словарь.