| blue whale / sulfur bottom / Balaenoptera musculus largest mammal ever known, bluish-grey migratory whalebone whale mostly of southern hemisphere |
| house mouse / Mus musculus brownish-grey Old World mouse now a common household pest worldwide |
| muscle / musculus one of the contractile organs of the body |
| musculus abductor digiti minimi manus the abductor muscle of the little finger |
| musculus abductor digiti minimi pedis the abductor muscles of the little toe |
| musculus abductor hallucis the abductor muscle of the great toe |
| musculus abductor pollicis the abductor muscle of the thumb |
| musculus adductor brevis the short adductor muscle of the thigh |
| musculus adductor longus the long adductor muscle of the thigh |
| musculus adductor magnus / great adductor muscle the muscle that adducts and extends the thigh |