Pronunciation: (chig'ō), [key]
a flea, Tunga penetrans, of tropical America and Africa, the impregnated female of which embeds itself in the skin, esp. of the feet, of humans and animals and becomes greatly distended with eggs. Also called chig'oe flea", chigger, jigger, sand flea.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.