1 any bulbous plant of the genus Scilla, esp. S. autumnalis.
2 a seashore plant, Urginea maritima, having bulbs used in diuretic and purgative preparations. Also called sea onion.
3 any crustacean of the genus Squilla.
Etymology: ME f. L squilla, scilla f. Gk skilla
Useful english dictionary. 2012.