7 letters · 11 points in Scrabble
noun lingerie consisting of a loose dress designed to be worn in bed by women
originEtymology tree Proto-Indo-European *nókʷts Proto-Germanic *nahts Proto-West Germanic *naht Proto-West Germanic *nahti Old English niht Middle English nyght English night Old English -iġ Middle English -y English -y ▲ Scots -ieinflu. English -ie English nightie From night + -ie (suffix forming colloquialisms).
Etymology from Wiktionary, CC BY-SA 3.0