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wood·louseor wood louse (wo͝od′lous′)
n. pl. wood·lice (-līs′) or wood lice
Any of various terrestrial isopod crustaceans of the suborder Oniscidea, having a gray or brown oval segmented body and commonly found in damp places such as under logs. Some woodlice can roll into a ball. Also called pillbug, slater, sowbug.
any of various tiny isopod crustaceans, often of damp shady habitats, as the pill bug and the sow bug.