MEANING: noun:
1. A small container for pills.
2. A small fortified enclosure, used for firing weapons, observing, etc.
3. A small brimless hat with a flat top and straight sides.
4. Something small or ineffectual.

ETYMOLOGY: From pill, from Latin pilula (little ball), from pila (ball) + box, from Old English, from Latin buxis, from pyxis (boxwood box), from Greek pyxis, from pyxos (box tree). Earliest documented use: 1702.

GILLBOX - what fish get their oxygen delivered in

POLLBOX - where you deposit your ballot

SPILLBOX - a large concrete casting downstream from a dam to minimize erosion from the water runoff