Origin and Etymology of squill
Middle English, from Anglo-French squille, Latin squilla, scilla, from Greek skilla
First Known Use: 14th century
Medical Definition of squill
1a: a Mediterranean bulbous herb of the genus Urginea (U. maritima) of the lily family—called also sea onionb: any of several other plants of the genus Urgineac: the bulbs of a squill (especially U. maritima)
2a: the dried sliced bulb of the white-bulbed form of the squill (Urginea maritima) of the Mediterranean region or the dried sliced bulb of a related Asian plant (U. indica) that contains one or more physically active cardiac glycosides and was formerly used as an expectorant, cardiac stimulant, and diuretic—see urginea 2a; compare white squillb: red squill 2
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