Search Result for "pill bug":
Wordnet 3.0

NOUN (1)

1. small terrestrial isopod with a convex segmented body that can roll up into a ball;

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2 definitions retrieved:

The Collaborative International Dictionary of English v.0.48:

Pill \Pill\, n. [F. pilute, L. pilula a pill, little ball, dim. of L. pila a ball. Cf. Piles.] 1. A medicine in the form of a little ball, or small round mass, to be swallowed whole. [1913 Webster] 2. Figuratively, something offensive or nauseous which must be accepted or endured. --Udall. [1913 Webster] Pill beetle (Zool.), any small beetle of the genus Byrrhus, having a rounded body, with the head concealed beneath the thorax. Pill bug (Zool.), any terrestrial isopod of the genus Armadillo, having the habit of rolling itself into a ball when disturbed. Called also pill wood louse. [1913 Webster]
WordNet (r) 3.0 (2006):

pill bug n 1: small terrestrial isopod with a convex segmented body that can roll up into a ball