שרץ

Verb

 * 1) to wriggle, to swarm, to creep
 * 2) to infest

Noun

 * 1) bug, creepy-crawly
 * 2) small unkosher edible animals

Etymology
From.

Noun

 * 1) reptile, worm, crawling animal
 * 2) bug, creepy-crawly