carragheen
noun [ U ] mainly UK (US usually carrageen) uk/ˈkær.ə.ɡiːn/ us/ˈker.ə.ɡiːn/ (also Irish moss)
角叉菜（一种海菜）
a type of seaweed (= a plant that grows in or near the sea) that can be eaten uncooked or used in cooking to make other foods thicker