One who, or that which, warbles; a singer; a songster; --
applied chiefly to birds.
Any one of numerous species of small Old World singing
birds belonging to the family Sylviidae, many of which are noted
songsters. The bluethroat, blackcap, reed warbler (see under Reed), and
sedge warbler (see under Sedge) are well-known species.
Any one of numerous species of small, often bright
colored, American singing birds of the family or subfamily
Mniotiltidae, or Sylvicolinae. They are allied to the Old World
warblers, but most of them are not particularly musical.