B3U1T1T1O1N1B3A1L1L1S1
15 points
BUTTONBALLS is validvalid
BUTTONBALL,
BUTTONBALL, the American plane tree, a large tree, producing rough balls, from which it is named, also BUTTONWOOD
BUTTONBALL,
BUTTONBALL, the American plane tree, a large tree, producing rough balls, from which it is named, also BUTTONWOOD