9 letters · 15 points in Scrabble
originEtymology tree Latin palpō Latin -bra Latin palpebra Proto-Indo-European *h₂el-der.? Proto-Italic *-ālis Latin -ālis Late Latin palpebrālisbor. English palpebral Borrowed from Late Latin palpebrālis (“of or on the eyelids”), from palpebra (“an eyelid”) + -ālis (“-al”, adjectival suffix), equivalent to palpebra + -al.
Etymology from Wiktionary, CC BY-SA 3.0