Main Entry: crus·ta·cea

Pronunciation: \ˌkrəs-ˈtā-sh(ē-)ə\

Function: noun plural

1 capitalized : a large class of mostly aquatic arthropods that have a chitinous or calcareous and chitinous exoskeleton, a pair of often much modified appendages on each segment, and two pairs of antennae and that include the lobsters, shrimps, crabs, wood lice, water fleas, and barnacles
2 : arthropods of the class Crustacea

—crus·ta·cean \-shən\ adjective or noun