一いち枚まい貝がい

noun

univalve; single-shelled mollusk

Refers to mollusks with a single shell, such as snails and limpets, as opposed to bivalves (二枚貝). Used in biological and everyday contexts.

• サザエは一いち枚まい貝がいの仲なか間まです。

  Turban shells are a type of univalve.

• 一いち枚まい貝がいと二に枚まい貝がいの違ちがいを調しらべる。

  I look up the difference between univalves and bivalves.