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d part by means of a vacuum. Horse leech, a less powerful European leech (Hæmopis vorax), commonly attacking the membrane that lines the inside of the mouth and nostrils of animals that drink at pools where it lives.

two opposite regular surfaces, either both curved, or one curved and the other plane, and commonly used, either singly or combined, in optical instruments, for changing the direction of rays of light, and thus magnifying objects, or otherwise modifying vision. In practice, the curved surfaces are usually spherical, tho…

which the underlying tissues may protrude or roots may issue, either in the air, or more commonly when the stem or branch is covered with water or earth.

A mineral of an olive-green color, commonly in orthorhombic crystals. It is a hydrous phosphate of copper.

Commonly; usually. [Obs.] Bp. Fisher. The great thieves of a state are lightly the officers of the crown. B. Jonson.

A discharge of atmospheric electricity, accompanied by a vivid flash of light, commonly from one cloud to another, sometimes from a cloud to the earth. The sound produced by the electricity in passing rapidly through the atmosphere constitutes thunder.

icy; method of argument; department of industry, trade, or intellectual activity. He is uncommonly powerful in his own line, but it is not the line of a first-rate man. Coleridge.

A noun suffix, commonly having a diminutive or a depreciatory force; as in duck-ling, dosling, hireling, fosterling, firstling, underling.

me; a literary history; literary conversation. He has long outlived his century, the term commonly fixed as the test of literary merit. Johnson.

asure for certain articles, being as much as may be carried at one time by the conveyance commonly used for the article measured; as, a load of wood; a load of hay; specifically, five quarters.

f the fourth term of a proportion of which one of the terms is a given constant quantity, commonly one hour, while the other terms are expressed in minutes and seconds; -- not now used.

A chest of drawers not more than four feet high; -- applied commonly to the lower half of a tallboy from which the upper half has been removed. [U. S.]

g has a lunate spot surrounded by rings of light yellow, blue, and black. The caterpillar commonly feeds on the hickory, sassafras, and maple.

An organ for aërial respiration; -- commonly in the plural. My lungs began to crow like chanticleer. Shak.

erous plants (Alyssum) with white or yellow flowers and rounded pods. A. maritimum is the commonly cultivated sweet alyssum, a fragrant white-flowered annual.

A model of the human body, made of papier-mache or other material, commonly in detachable pieces, for exhibiting the different parts and organs, their relative position, etc.

on of sappers or riflemen while attacking a fortress, or of gunners at embrasures; -- now commonly written mantlet.

with a small freestone pit, a fine skin, and a peculiar bitterish flavor. Manzanillas are commonly pitted and stuffed with Spanish pimientos.

tissue which fills the cavities of most bones; the medulla. In the larger cavities it is commonly very fatty, but in the smaller cavities it is much less fatty, and red or reddish in color.

A tract of soft wet land, commonly covered partially or wholly with water; a fen; a swamp; a morass. [Written also marish.] Marsh asphodel (Bot.), a plant (Nartheeium ossifragum) with linear equitant leaves, and a raceme of small white flowers; -- called also bog asphodel. -- Marsh cinquefoil (Bot.), a plant (Potentil…