Definition of "nightingale"

nightingale¹

/ˈnaɪtɪŋɡeɪl/

noun
plural nightingales
1. A Eurasian and African songbird, Luscinia megarhynchos, family Muscicapidae, famed for its beautiful singing at night; a common nightingale.
  Quotations
  The oaks around were the home of a tribe of nightingales.
  1826, [Mary Shelley], chapter V, in The Last Man. […], volume I, London: Henry Colburn, […]
  And David's Lips are lock't; but in divineHigh piping Péhlevi, with "Wine! Wine! Wine!Red Wine!" — the Nightingale cries to the RoseThat yellow Cheek of her's to'incarnadine.
  1859, Edward Fitzgerald, The Rubáiyát of Omar Khayyám: The Astronomer-Poet of Persia, page 2
  The air, too, was heavy with perfume, and a nightingale, high in the heavens, gave out a cheery song of welcome.
  1936, F.J. Thwaites, chapter XXII, in The Redemption, Sydney: H. John Edwards, published 1940, page 222

nightingale²

/ˈnaɪtɪŋɡeɪl/

noun
plural nightingales
1. A kind of flannel scarf with sleeves, formerly worn by invalids when sitting up in bed.