Source : Webster's Revised Unabridged Dictionary (1913)

Bluethroat \Blue"throat`\, n. (Zo["o]l.)
   A singing bird of northern Europe and Asia ({Cyanecula
   Suecica}), related to the nightingales; -- called also
   {blue-throated robin} and {blue-throated warbler}.

Source : WordNet®

bluethroat
     n : songbird of northern Europe and Asia [syn: {Erithacus
         svecicus}]