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ystal which is more than ordinarily flattened in the center; also, a species of convexoconcave lens for spectacles.

To take part as a masker in a masquerade. Cavendish.

A lens convex on one side and concave on the other.

To transform into a mineral. In these caverns the bones are not mineralized. Buckland.

Abounding with mines; like a mine. "Miny caverns." Thomson.

The opening or entrance of any cavity, as a cave, pit, well, or den.

inclose in walls; to wall; to immure; to shut up. Spenser. The five kings are mured in a cave. John. x. (Heading).

normally converged so as to produce a distinct image. It is corrected by the use of a concave lens.

larval state, is injurious to carrots; -- called also carrot fly. -- Negro head (Com.), Cavendish tobacco. [Cant] McElrath. -- Negro monkey (Zoöl.), the moor monkey.

ce having a grayish white color, occuring in efforescences on old walls, and in limestone caves, especially where there exists decaying animal matter.

Of, pertaining to, or appropriate to, nymphs; inhabited by nymphs; as, a nymphean cave.

e the popular name. Called also dancing girls. -- Opera glass, a short telescope with concave eye lenses of low power, usually made double, that is, with a tube and set of glasses for each eye; a lorgnette; -- so called because adapted for use at the opera, theater, etc. -- Opera hat, a gentleman's folding hat. -- O…

of the eye, particularly the retina. Light is thrown into the eye by a mirror (usually concave) and the interior is then examined with or without the aid of a lens. -- Oph*thal`mo*scop"ic, a.

Concave behind; -- applied especially to vertebræ in which the anterior end of the centrum is convex and the posterior concave.

An opening or aperture; a recess; a recess; a chamber. [Obs.] Spenser. "The cave's inmost overture." Chapman.

The inner and somewhat concave part of the hand between the bases of the fingers and the wrist. Clench'd her fingers till they bit the palm. Tennyson.

To breathe forth quickly or in a labored manner; to gasp out. There is a cavern where my spirit Was panted forth in anguish. Shelley.

e despised by society. Pariah dog (Zoöl.), a mongrel race of half-wild dogs which act as scavengers in Oriental cities. -- Pariah kite (Zoöl.), a species of kite (Milvus govinda) which acts as a scavenger in India.

n all sides. Periscopic spectacles (Opt.), spectacles having concavo-convex or convexo-concave lenses with a considerable curvature corresponding to that of the eye, to increase the distinctness of objects viewed obliquely.

Combining forms signifying flat, level, plane; as planifolious, planimetry, plano-concave.