"Freetail" is a term used to describe particular species of bats, commonly known as the Mexican or Brazilian free-tailed bats. However, there are other terms that can be used in place of "freetail" to describe these bats, including mastiff bats, coquero bats, and Tadarida brasiliensis. Other synonyms for "freetail" may include insect-eating bats, cave bats, and even flying foxes. While these terms may not always specifically refer to the Mexican or Brazilian free-tailed bat, they are still useful synonyms when discussing bat populations and behavior. Regardless of the term used, bats play a crucial role in the ecosystem as they control insect populations and help pollinate plants.