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The crocodile bird. The crocodile . . . opens his chaps to let the trochil in to pick his teeth, which gives it the usual feeding. Sir T. Herbert.

A division of birds comprising the humming birds.

OF or pertaining to rotary motion; having power to draw out or turn round. "By art trochilic." Camden.

The science of rotary motion, or of wheel work. Wilkins.

One who studies, or is versed in, the nature and habits of humming birds, or the Trochilidæ. Gould.

The crocodile bird, or trochil.

The crocodile bird.

One of the small branches of a stag's antler.

A kind of tablet or lozenge; a troche.

See Trochiscus. [Obs.] Bacon.

A wheel-like joint of the stem of a fossil crinoid.

A pulley, or a structure resembling a pulley; as, the trochlea, or pulleylike end, of the humerus, which articulates with the ulna; or the trochlea, or fibrous ring, in the upper part of the orbit, through which the superior oblique, or trochlear, muscle of the eye passes.

Shaped like, or resembling, a pulley; pertaining to, or connected with, a trochlea; as, a trochlear articular surface; the trochlear muscle of the eye. Trochlear nerve. See Pathetic nerve, under Pathetic.

Pertaining to, or connected with, a trochlea; trochlear; as, the trochleary, or trochlear, nerve.

es all being in one plane. Cycloids, epicycloids, hypocycloids, cardioids, etc., are all trochoids.

Of or pertaining to a trochoid; having the properties of a trochoid.

A contrivance for computing the revolutions of a wheel; an odometer.

A young larval form of many annelids, mollusks, and bryozoans, in which a circle of cilia is developed around the anterior end.

Any one of numerous species of marine univalve shells belonging to Trochus and many allied genera of the family Trochidæ. Some of the species are called also topshells.

An old English game; -- called also lawn billiards.