1.NounA warbler, of species of Acrocephalus scirpaceus in family Acrocephalidae, native to Eurasia and Africa. .mw-parser-output .defdate{font-size:smaller}
2.NounAny of various similar Old World birds of the same genus, especially great reed warbler (A. arundinaceus) and clamorous reed warbler (A. stentoreus).