Wiktionary
bat fly
n. Any of the family Nycteribiidae of flattened, spider-like parasitic fly without eyes or wings.
Usage examples of "bat fly".
Anirul considered letting the bat fly free, but decided not to risk it.
Dennis Drive, swears he saw a giant bat fly past his balcony just moments before the body was found.
Prance's secretary, claims he saw something like a bat fly off the roof a few minutes before the body was found.
Anyway, a couple of hikers saw a bat fly into some rocks and started investigating and found a small cave.
Porter's house, as if expecting to see a bat fly out a window or something.