| a. | 1. | (Zool.) Of or pertaining to the Crustacea; crustaceous. |
| Noun | 1. | crustacean - any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton |
| Adj. | 1. | crustacean - of or belonging to the class Crustacea Synonyms: crustaceous |
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