（美）球潮虫；鼠妇（Armadillidium vulgare，一种遇惊即蜷缩成球形的小虫）

[ noun ]
small terrestrial isopod with a convex segmented body that can roll up into a ball
<noun.animal>

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} (Zo["o]l.), any small beetle of the genus
{Byrrhus}, having a rounded body, with the head concealed
beneath the thorax.

{Pill bug} (Zo["o]l.), any terrestrial isopod of the genus
{Armadillo}, having the habit of rolling itself into a
ball when disturbed. Called also {pill wood louse}.