chipmunk [< Algonk; cf. Ojibwa atchitamon head first, applied originally to the red squirrel from its way of descending a tree trunk] Earlier recorded forms such as chetamon, chitmunk, q.v., chipmonk, etc. indicate the influence of folk etymology in shaping the now general form.
n. any one of several small striped rodents, resembling squirrels, of the family Sciuridae.
See also: big chipmunk hackee striped squirrel