Lewis Short
tūbercŭlum (noun N) : dim.id.
* A small swelling, bump, or protuberance; a boil, pimple, tubercle: in gingivis,Cels. 6, 13: in capite,id. 7, 6: fabae,an excrescence,Plin. 22, 22, 45, § 91; 11, 11, 12, § 29.
Charlton T. Lewis, Charles Short, A Latin Dictionary