red squill

squill (skwil) any of various plants of the genus Urginea, particularly U. maritima or U. indica, or the fleshy inner scales of their bulbs.

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red squill  a variety of Urginea maritima with red bulbs, or the fleshy inner scales of its bulb, a source of the cardiac glycoside scilliroside; it can cause convulsions or cardiac arrest and is used as a rodenticide.

white squill  a variety of Urginea maritima with white bulbs, or the fleshy inner scales of its bulb, a source of several cardiac glycosides; used as a cardiotonic; also used in folk medicine.

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red squill

a cardiac glycoside (scilliroside) extracted from the dried bulbs of Urginea maritima. Was used therapeutically as a cardiac stimulant at one time, now used as a rodenticide. Poisoning, with signs of bradycardia and convulsions, occurs with very large doses.