carrageen
or carragheen
noun
- a purplish, edible red algae (Chondrus crispus) found on rocky shores of N Europe and North America; Irish moss: used in jellies, lotions, medicines, etc.
- any of several similar red algae (genus Gigartina)
See carrageen in American Heritage Dictionary 4
also car·ra·gheen (kărˈə-gēnˌ)
noun