Lewis & Short

muscŭlōsus, a, um, adj. [musculus].

  1. I. Muscular, fleshy (post-Aug.): cor naturā musculosum, Cels. 4, 1: pectora, Col. 8, 2.
  2. II. Musclōsus, for Musculosus, a Roman surname, Inscr. Grut. 337.