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ruby-throated

ruby-throated, a.
  [ruby a.]
  Having a ruby-red gorget. In names of birds (see quots.). Also occas. used of people.

1782 Latham Gen. Synop. Birds I. ii. 769 Ruby-throated Humming-bird, Trochilus rubineus. Inhabits Brasil and Guiana. 1872 Coues N. Amer. Birds 184 Ruby-throated Hummingbird,..metallic gorget reflecting ruby-red. 1900 Westm. Gaz. 3 Dec. 10/2 Two specimens of the Calliope Camtschatkensis, or ruby-throated warbler. 1957 O. Nash You can't get there from Here 68 Our ruby-throated playgirls and madcap millionaires.

Oxford English Dictionary

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