flaxseed

flax·seed

noun \ˈflak(s)-ˌsēd\

Definition of FLAXSEED

: the small seed of flax (especially Linum usitatissimum) used especially as a source of oil, as a demulcent and emollient in treating inflammatory conditions of the respiratory, intestinal, and urinary passages, and as a dietary supplement—called also linseed