bat, chiropteran - nocturnal mouselike mammal with forelimbs modified to form membranous wings and anatomical adaptations for echolocation by which they navigate

Microchiroptera, suborder Microchiroptera - most of the bats in the world; all bats except fruit bats insectivorous bats

mouse-eared bat - a carnivorous bat with ears like a mouse

leaf-nosed bat, leafnose bat - bat having a leaflike flap at the end of the nose; especially of the families Phyllostomatidae and Rhinolophidae and Hipposideridae

vespertilian bat, vespertilionid - a variety of carnivorous bat

brown bat - any of numerous medium to small insectivorous bats found worldwide in caves and trees and buildings

free-tailed bat, freetail, freetailed bat - small swift insectivorous bat with leathery ears and a long tail; common in warm regions

mastiff bat - a soft-furred chocolate-brown bat with folded ears and small wings; often runs along the ground

true vampire bat, vampire bat - any of various tropical American bats of the family Desmodontidae that bite mammals and birds to feed on their blood