形容詞 crustaceous:

1. of or belonging to the class Crustacea
   同義詞：crustacean
2. being or having or resembling a hard crust or shell

crus.ta.ceous

adj.（形容詞）
Having, resembling, or constituting a hard crust or shell.
硬皮的，外殼的：有、象或構成硬皮或外殼的
Crustacean.
甲殼綱的

來源：
Latin crusta [shell] * see kreus-
拉丁語 crusta [外殼] *參見 kreus-
-aceous
-aceous