5 letters · 10 points in Scrabble
noun a hard grey-black mineral consisting of corundum and either hematite or magnetite; used as an abrasive (especially as a coating on paper)
originFrom medieval Germanic personal names, either a variant of Amory, from Amalric, Proto-Germanic *amal (“vigor, bravery”) (compare *ammōną) + Old High German rīhhi (“ruler”), or of Henry, from Old High German Heimrich, from heim (“home”) + rīhhi (“ruler”).
Etymology from Wiktionary, CC BY-SA 3.0