7 letters · 14 points in Scrabble
noun small tropical flea; the fertile female burrows under the skin of the host including humans
noun larval mite that sucks the blood of vertebrates including human beings causing intense irritation
originFrom chigoe, likely from a Cariban language term such as Kari'na siko (“chigoe”) (early recorded variant chico), from Proto-Cariban *tikô.
Etymology from Wiktionary, CC BY-SA 3.0