| Noun | 1. | chiropteran - nocturnal mouselike mammal with forelimbs modified to form membranous wings and anatomical adaptations for echolocation by which they navigateChiroptera, order Chiroptera - an old order dating to early Eocene: bats: suborder Megachiroptera (fruit bats); suborder Microchiroptera (insectivorous bats) fruit bat, megabat - large Old World bat of warm and tropical regions that feeds on fruit carnivorous bat, microbat - typically having large ears and feeding primarily on insects; worldwide in distribution wing - a movable organ for flying (one of a pair) | |