1. (n.) A European bulbous liliaceous plant (Urginea, formerly Scilla, maritima), of acrid, expectorant, diuretic, and emetic properties used in medicine. Called also sea onion.

2. (n.) Any bulbous plant of the genus Scilla; as, the bluebell squill (S. mutans).

3. (n.) A squilla.

4. (n.) A mantis.