Any of the terrestrial isopod crustaceans of suborder Oniscidea, which have a rigid, segmented exoskeleton, often being capable of rolling into a ball, and feed only on dead plant matter, usually living in damp, dark places, such as under stones or bark.

a European spider, Dysdera crocata, that has been introduced to the United States; it has a painful, but not normally dangerous, bite

plural of woodlouse spider

Synonym of sea slater (“littoral woodlouse”) / A chiton (type of mollusk).