1) Family sciuridae 2) Mammal family 3) True squirrels 
A family of the order rodentia which contains 49 genera. Some of the more common genera are marmota, which includes the marmot and woodchuck; sciurus, the gray squirrel, s. Carolinensis, and the fox squirrel, s. Niger; tamias, the eastern and western chipmunk; and tamiasciurus, the red squirrel. The flying squirrels, except the scaly-tailed anomalu...
[n] - true squirrels
family Sciuridae noun a mammal family of true squirrels including: ground squirrels; marmots; chipmunks; flying squirrels; spermophiles