(1)a clam that is usually steamed in the shell
(2)殻のまま通常蒸されるハマグリ
(3)an edible clam with thin oval-shaped shell found in coastal regions of the United States and Europe
(4)米国とヨーロッパの沿岸地域で見つかる薄い卵型の貝殻を持つ食用クラム