7 letters · 10 points in Scrabble
noun naked-tailed armadillo of tropical South America
originFrom a compound word in a Tupi-Guarani language (compare tatu-ai), of which the first element is ultimately from Old Tupi tatu (“armadillo”). Compare Portuguese tatu, French tatou. The second element (ay or ai) may mean "wound" because of a belief that its fat was used on wounds, or "colored", or "worthless".
Etymology from Wiktionary, CC BY-SA 3.0