Source : Webster's Revised Unabridged Dictionary (1913)

Whitethroat \White"throat`\, n. (Zo["o]l.)
   Any one of several species of Old World warblers, esp. the
   common European species ({Sylvia cinerea}), called also
   {strawsmear}, {nettlebird}, {muff}, and {whitecap}, the
   garden whitethroat, or golden warbler ({S. hortensis}), and
   the lesser whitethroat ({S. curruca}).

Source : WordNet®

whitethroat
     n 1: Old World warbler similar to the greater whitethroat but
          smaller [syn: {lesser whitethroat}, {Sylvia curruca}]
     2: grayish-brown Old World warbler with a white throat and
        underparts [syn: {greater whitethroat}, {Sylvia communis}]
     3: common North American finch with a white patch on the throat
        and black-and-white striped crown [syn: {white-throated
        sparrow}, {Zonotrichia albicollis}]