A terrestrial isopod crustacean (suborder Oniscoidea) with a rigid, segmented exoskeleton, often capable of being rolled into a ball, found in damp, dark places, and feeding only on dead plant matter, usually lives under stones or bark
A woodlouse is a very small grey creature with a hard body and fourteen legs. Woodlice live in damp places. woodlice a small grey creature like an insect that lives under wood, stones etc