pill bug

English Thesaurus

1. small terrestrial isopod with a convex segmented body that can roll up into a ball (noun.animal)

hypernym	:	slater, woodlouse,
definition	:	any of various small terrestrial isopods having a flat elliptical segmented body; found in damp habitats (noun.animal)

member meronym	:	armadillidium, genus armadillidium,
definition	:	type genus of the Armadillidiidae (noun.animal)