8 letters · 18 points in Scrabble
noun art consisting of a painting or carving (especially an altarpiece) on three panels (usually hinged together)
originFrom Ancient Greek τρίπτυχος (tríptukhos, “consisting of three layers, threefold”), from τρι- (tri-) + πτυχή (ptukhḗ, “a fold”).
Etymology from Wiktionary, CC BY-SA 3.0