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.
2. Figuratively, something offensive or nauseous which must
be accepted or endured. --Udall.
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.