Rubythroat \Ru"by*throat`\, n. (Zool.)
Any one of numerous species of humming birds belonging to
{Trochilus}, {Calypte}, {Stellula}, and allies, in which the
male has on the throat a brilliant patch of red feathers
having metallic reflections; esp., the common humming bird of
the Eastern United States ({Trochilus colubris}).
[1913 Webster]