5 letters · 9 points in Scrabble
noun a small porous bowl made of bone ash used in assaying to separate precious metals from e.g. lead
originBorrowed from French coupelle, from Medieval Latin cūpella, from Latin cūpa (“cask”) + -ella (“-elle: forming feminine diminutives”). Equivalent to cup + -el.
Etymology from Wiktionary, CC BY-SA 3.0