| any insectivorous bat of the family Molossidae, found in warm areas throughout the world, having a naked tail, folded ears, and small wings and most often seen running along the ground. |
| mastiff bat n. Any of various snub-nosed bats of the family Molossidae, found in warm regions of most parts of the world and having narrow wings and brown, gray, or black fur. |
mastiff bat
any of various species of free-tailed bats (family Molossidae) named for their doglike faces. The eight New World species of bats making up the genus Molossus are called mastiff bats. Several other genera also include species commonly called mastiff bats.
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