Irish moss

Irish moss

noun \ˌī(ə)r-ish-ˈmȯs\

Definition of IRISH MOSS

1

: the dried and bleached plants of a red alga (especially Chondrus crispus) that are used as an agent for thickening or emulsifying or as a demulcent (as in cookery or pharmacy)—called also chondrus

2

: a red alga (especially Chondrus crispus) that is a source of Irish moss—called also carrageen