Lewis Short
(adjective) : muscŭlōsus, a, um, musculus.
* Muscular, fleshy (post-Aug.): cor naturā musculosum,Cels. 4, 1: pectora,Col. 8, 2.
* Musclōsus, for Musculosus, a Roman surname, Inscr. Grut. 337.
Charlton T. Lewis, Charles Short, A Latin Dictionary