big brown bat
See under brown bat.
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Definition for big brown bat (2 of 2)
any of several small to medium-sized common bats of the genera Myotis and Eptesicus, found worldwide in caves, trees, and buildings, including M. lucifugus (little brown bat) and E. fuscus (big brown bat), a widespread North American species.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019