10 letters · 18 points in Scrabble
noun Eurasian perennial mint have small lilac-blue flowers and ovate leaves; yields an aromatic oil
noun erect hairy branching American herb having purple-blue flowers; yields an essential oil used as an insect repellent and sometimes in folk medicine
originApparently an alteration (after penny) of Anglo-Norman puliol royal, from Latin pūlegium.
Etymology from Wiktionary, CC BY-SA 3.0