- any of numerous Old World birds of the family Muscicapidae, that feed on insects captured in the air.
- Also called tyrant flycatcher. any of numerous similar American birds of the family Tyrannidae.
- any small insectivorous songbird of the Old World subfamily Muscicapinae, having small slender bills fringed with bristles: family MuscicapidaeSee also spotted flycatcher
- any American passerine bird of the family Tyrannidae