1. (noun)Old World flycatcher, true flycatcher, flycatcher any of a large group of small songbirds that feed on insects taken on the wing Synonyms: flycatcher, tyrant bird, true flycatcher, tyrant flycatcher
2. (noun)New World flycatcher, flycatcher, tyrant flycatcher, tyrant bird large American birds that characteristically catch insects on the wing Synonyms: flycatcher, tyrant bird, true flycatcher, tyrant flycatcher