Search the Dictionary

e iris; the sight, apple, or black of the eye. See the Note under Eye, and Iris. Pin-hole pupil (Med.), the pupil of the eye when so contracted (as it sometimes is in typhus, or opium poisoning) as to resemble a pin hole. Dunglison.

The state of being a pupil. As sons of kings, loving in pupilage, Have turned to tyrants when they came to power. Tennyson.

The period before puberty, or from birth to fourteen in males, and twelve in females.

Of or pertaining to a pupil or ward. Johnson.

An instrument for measuring the size of the pupil of the pupil of the eye.

Having an eyelike spot on the wing, with two dots within it of a different color, as in some butterflies.

An albino has a skin of a milky hue, with hair of the same color, and eyes with deep red pupil and pink or blue iris. The term is also used of the lower animals, as white mice, elephants, etc.; and of plants in a whitish condition from the absence of chlorophyll. Amer. Cyc.

A female pupil; especially, a graduate of a school or college.

A pupil; especially, a graduate of a college or other seminary of learning.

Inequality of the pupils of the eye.

; especially fitted or qualified (to do something); quick to learn; prompt; expert; as, a pupil apt to learn; an apt scholar. "An apt wit." Johnson. Live a thousand years, I shall not find myself so apt to die. Shak. I find thee apt . . . Now, Hamlet, hear. Shak.

and the Datura Stramonium, or thorn apple. It is remarkable for its power in dilating the pupil of the eye. Called also daturine.

. -- Optic axis, Visual axis (Opt.), the straight line passing through the center of the pupil, and perpendicular to the surface of the eye. -- Radical axis of two circles (Geom.), the straight line perpendicular to the line joining their centers and such that the tangents from any point of it to the two circles shal…

l of the eye, the eye itself, as distinguished from its lids and socket; -- formerly, the pupil of the eye. -- Ball valve (Mach.), a contrivance by which a ball, placed in a circular cup with a hole in its bottom, operates as a valve. -- Ball vein (Mining), a sort of iron ore, found in loose masses of a globular form…

l, or in repelling an attempt to board it. Totten. -- Boarding school, a school in which pupils receive board and lodging as well as instruction.

A young man in training for military or naval service; esp. a pupil in a military or naval school, as at West Point, Annapolis, or Woolwich.

tive of tropical Africa. It is highly poisonous. It is used to produce contraction of the pupil of the eye; also in tetanus, neuralgia, and rheumatic diseases; -- called also ordeal bean, being used by the negroes in trials for witchcraft.

An instrument to guid the hands and fingers of pupils in playing on the piano, etc.

or surgery is taught by the examination and treatment of patients in the presence of the pupils.

tening, or shrinking; the state of being contracted; as, contraction of the heart, of the pupil of the eye, or of a tendion; the contraction produced by cold.