any of several small, striped, terrestrial squirrels of the genera Tamias, of North America, and Eutamia, of Asia and North America, esp. T. striatus, of eastern North America.
Origin: 1825–35, Americanism; assimilated var. of earlier chitmunk, appar. < Ojibwa ačitamo⋅nʔ red squirrel, equiv, to ačit- headfirst, face-down + derivational elements; so called from the squirrel's manner of descending trees
chip·munk (chĭp'mŭngk') n. Any of several small striped terrestrial squirrels of the genera Tamias and Eutamias, especially T. striatus of eastern North America.
[Alteration of obsolete chitmunk, perhaps from Ojibwa ajidamoon, red squirrel.]
1841, from Algonquian, probably Ojibwa ajidamoo (in the Ottawa dialect ajidamoonh) "squirrel," lit. "one who descends trees headlong," probably infl. by Eng. chip and mink.