Definition of flying squirrel
: either of two small nocturnal North American squirrels (Glaucomys volans and G. sabrinus) with folds of skin connecting the forelegs and hind legs that enable it to make long gliding leaps; also : any of various squirrels that possess a patagium
First Known Use of flying squirrel
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Britannica.com: Encyclopedia article about flying squirrel
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