10 letters · 15 points in Scrabble
originFrom Sinhalese [script needed] (kaḷu-madīriya), perhaps from Coromandel ebony (see coromandel), changed by association with Sinhalese කළු (kaḷu, “black”); or perhaps a metathetic variant of coromandel via Dutch kalamanderhout.
Etymology from Wiktionary, CC BY-SA 3.0