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- (posterior, back; as, postero-inferior, situated back and below; postero-lateral, situated back and at the side.

hind the frontal bone or the frontal region of the skull; -- applied especially to a bone back of and below the frontal in many animals. -- n.

Backward. [Obs.] Sir T. Browne.

The part of a theater behind the scenes; the back part of the stage of a theater.

-- Prairie warbler (Zoöl.), a bright-colored American warbler (Dendroica discolor). The back is olive yellow, with a group of reddish spots in the middle; the under parts and the parts around the eyes are bright yellow; the sides of the throat and spots along the sides, black; three outer tail feathers partly white.…

admission, as of steam, to the engine cylinder before the back stroke is completed, thus increasing the cushioning.

s on the action of the planets alone. -- Precession of the equinoxes (Astron.), the slow backward motion of the equinoctial points along the ecliptic, at the rate of 50.2" annually, caused by the action of the sun, moon, and planets, upon the protuberant matter about the earth's equator, in connection with its diurnal…

pen, or come to a crisis, suddenly or too soon; as, precipitate a journey, or a conflict. Back to his sight precipitates her steps. Glover. If they be daring, it may precipitate their designs, and prove dangerous. Bacon.

Situated in front of the back; immediately in front, or on the ventral side the dorsal part of the vertebral column.

a. Atmospheric pressure, Center of pressure, etc. See under Atmospheric, Center, etc. -- Back pressure (Steam engine), pressure which resists the motion of the piston, as the pressure of exhaust steam which does not find free outlet. -- Fluid pressure, pressure like that exerted by a fluid. It is a thrust which is no…

Done with hold design, rash confidence, or in violation of known duty; willful. "Keep back the servant also from presumptuous sins." Ps. xix. 13.

To spur onward; to ride on horseback. Milton. A gentle knight was pricking on the plain. Spenser.

A necessary house or place; a backhouse.

otodontidæ; a notodontian; -- so called because the larva has a hump or prominence on its back. Several of the species are injurious to fruit trees.

, a small American warbler (Protonotaria citrea). The general color is golden yellow, the back is olivaceous, the rump and tail are ash-color, several outer tail feathers are partly white.

wise copied, cast, or the like; a primary form; exemplar; archetype. They will turn their backs on it, like their great precursor and prototype. Burke.

The region of the skull, in the temporal fossa back of the orbit, where the great wing of the sphenoid, the temporal, the parietal, and the frontal hones approach each other.

To breathe quick and hard, or with puffs, as after violent exertion. The ass comes back again, puffing and blowing, from the chase. L' Estrange.

To hold back, and so prevent from winning; as, the favorite was pulled.

A number of fishhooks rigidly fastened back to be pulled through the water to catch fish.