9 letters · 14 points in Scrabble
adjective having three cusps or points (especially a molar tooth)
originEtymology tree Proto-Indo-European *tréyes Proto-Indo-European *tri- Proto-Italic *tri- Latin tri-der. English tri- English cuspid English tricuspid From tri- + cuspid.
Etymology from Wiktionary, CC BY-SA 3.0