Oniscus
noun
Onis·cus
ōˈniskəs
: a genus (the type of the family Oniscidae) comprising isopods that cannot roll into a ball and formerly including most of the known isopods but now restricted to a few chiefly Old World terrestrial forms with flattened body, large eyes, and 3-jointed antennal flagella
Word History
Etymology
New Latin, from Latin, wood louse from Greek oniskos, from onos wood louse, ass + -iskos, diminutive noun suffix