8 letters · 14 points in Scrabble
noun a tower that is part of a defensive structure (such as a castle)
originFrom Old French barbacane, of uncertain origin: compare Arabic بَرْبَخ (barbaḵ, “aqueduct, sewer”), and Persian بابخانه (bâb-xâne, “gatehouse”).
Etymology from Wiktionary, CC BY-SA 3.0