12 letters · 20 points in Scrabble
verb ride a snowmobile
originEtymology tree Proto-Indo-European *sneygʷʰ- Proto-Indo-European *-os Proto-Indo-European *snóygʷʰos Proto-Germanic *snaiwaz Proto-West Germanic *snaiw Old English snāw Middle English snow English snow English -mobile English snowmobile English -ing English snowmobiling From snowmobile + -ing.
Etymology from Wiktionary, CC BY-SA 3.0