- the dried bulb of white varieties of a plant (Urginea maritima) of the lily family, formerly used in medicine
- this plant
See sea onion in American Heritage Dictionary 4
- A Mediterranean plant (Urginea maritima) of the lily family, cultivated for its bulb that yields a powder used medicinally and as a rat poison. Also called red squill, squill.
- A small bulbous European plant (Scilla verna) having fragrant blue flowers.