Source : Webster's Revised Unabridged Dictionary (1913)

Murine \Mu"rine\, a. [L. murinus, from mus, muris, mouse: cf. F.
   murin.] (Zo["o]l.)
   Pertaining to a family of rodents ({Murid[ae]}), of which the
   mouse is the type.

Murine \Mu"rine\, n. (Zo["o]l.)
   One of a tribe of rodents, of which the mouse is the type.

Source : WordNet®

murine
     adj : of or relating to or transmitted by a member of the family
           Muridae (rats and mice); "a murine plague"
     n : a rodent that is a member of the family Muridae