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Labium

Definition: A lip, or liplike organ.

Labium

Definition: The lip of an organ pipe.

Labium

Definition: The folds of integument at the opening of the vulva.

Labium

Definition: The organ of insects which covers the mouth beneath, and
serves as an under lip. It consists of the second pair of maxillae,
usually closely united in the middle line, but bearing a pair of palpi
in most insects. It often consists of a thin anterior part (ligula or
palpiger) and a firmer posterior plate (mentum).

Labium

Definition: Inner margin of the aperture of a shell.