tamias striatus

from WordNet (r) 3.0 (2006)

Tamias striatus
    n 1: small striped semiterrestrial eastern American squirrel
         with cheek pouches [syn: {eastern chipmunk}, {hackee},
         {striped squirrel}, {ground squirrel}, {Tamias striatus}]

from The Collaborative International Dictionary of English v.0.48

Chipmunk \Chip"munk`\, n. [Indian name.] (Zool.)
   A squirrel-like animal of the genus {Tamias}, sometimes
   called the {striped squirrel}, {chipping squirrel}, {ground
   squirrel}, {hackee}. The common species of the United States
   is the {Tamias striatus}. [Written also {chipmonk},
   {chipmuck}, and {chipmuk}.]
   [1913 Webster]