Pill

n.
  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.
    3. Pill beetle (Zoöl.),
    any small beetle of the genus Byrrhus, having a rounded body, with the head concealed beneath the thorax.
    Pill bug (Zoöl.),
    any terrestrial isopod of the genus Armadillo, having the habit of rolling itself into a ball when disturbed. Called also pill wood louse.