The word "chiropteran" is a scientific term used to describe bats. However, there are several synonyms for this word that can be used to describe these fascinating creatures. One common synonym is "batrachian," which is derived from the Greek word for frog. This is because bats were once believed to be closely related to amphibians. Another synonym is "flying rodent," although this term can be considered derogatory. "Nocturnal mammal" is also a suitable synonym for bats, as they are primarily active at night. Other lesser-used synonyms for chiropteran include "aerial acrobat," "winged mammal," and "night flier".