1) Pertaining to squirrels 
of, like or pertaining to squirrels
• (n.) A rodent of the Squirrel family. • (a.) Of or pertaining to the Squirrel family.
Sci'u·rine adjective [ Confer French sciurien . See Sciurus .] (Zoology) Of or pertaining to the Squirrel family. -- noun A rodent of the Squirrel family. 
sciurine 1. Like a sciurine rodent or squirrel; of, or pertaining to squirrels. 2. Of, belonging to, or resembling the Sciuridae, a family of rodents that includes the squirrels and related mammals.