Meaning of sinigrin

sin•i•grin

Pronunciation: (sin'i-grin), [key]
— n. Chem.
  1. a colorless, crystalline, water-soluble solid, KCHNOS&multiplydot;HO, found chiefly in the seeds of the black mustard, that deters some insect predators. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.