Definition of bluetail in English:

bluetail

noun

  • 1English regional the fieldfare, Turdus pilaris (now rare).

  • 2(In full "red-flanked bluetail") an eastern Eurasian chat, Tarsiger cyanurus (or Luscinia cyanura) (family Muscicapidae), which has a blue tail in both sexes.

Origin

Mid 19th century.