Rubythroat \Ru"by*throat`\, n. (Zo["o]l.) 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).

Source: Webster's Revised Unabridged Dictionary (1913)
 

Trochilus \Troch"i*lus\, n.; pl. Trochili. [L. trochilus a kind of small bird. Gr. ?, fr. ? to run.]

1. (Zo["o]l.)
   (a) A genus of humming birds. It Formerly included all the known species.
   (b) Any one of several species of wrens and kinglets. [Obs.]


   (c) The crocodile bird.

2. (Arch.) An annular molding whose section is concave, like the edge of a pulley; -- called also scotia.

Source: Webster's Revised Unabridged Dictionary (1913)