Troch"i*lus (?), n.; pl. Trochili (#). [L.trochilus a kind of small bird. Gr. , fr. to run.]
1. Zool. (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.
© Webster 1913.