7 letters · 13 points in Scrabble
noun a small sharp-pointed tip resembling a spike on a stem or leaf
noun an adhesive label
noun a particularly difficult or baffling question or problem
originEtymology tree English stick English -er English sticker From stick (“to pierce, to be fastened, to adhere”) + -er (“agent”).
Etymology from Wiktionary, CC BY-SA 3.0