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An implement for cutting grass or grain; a sickle; an instrument for cutting or lopping; a billhook. Like slashing Bentley with his desperate hook. Pope.

A wind instrument of music; originally, one made of a horn (of an ox or a ram); now applied to various elaborately wrought instruments of brass or other metal, resembling a horn in shape. "Wind his horn under the castle wall." Spenser. See French horn, under French.

An instrument of music formerly popular in Wales, consisting of a wooden pipe, with holes at intervals. It was so called because the bell at the open end was sometimes made of horn.

The art of constructing instruments for making the hours, as clocks, watches, and dials.

An instrument indicating the time of day; a timepiece of any kind; a watch, clock, or dial. Shak.

An account of instruments that show the hour.

The science of measuring time, or the principles and art of constructing instruments for measuring and indicating portions of time, as clocks, watches, dials, etc.

An instrument for measuring time.

An instrument for measuring time, especially the interval of an hour. It consists of a glass vessel having two compartments, from the uppermost of which a quantity of sand, water, or mercury occupies an hour in running through a small aperture unto the lower.

A stringled instrument, lutelike in shape, in which the sound is produced by the friction of a wheel turned by a crank at the end, instead of by a bow, two of the strings being tuned as drones, while two or more, tuned in unison, are modulated by keys.

An instrument for tracing designs on glass.

An ancient musical instrument played by the action of water; a water organ. [Written also hydraulis.]

An instrument for determining the depth of the sea water by its pressure.

An instrument to measure the velocity of a liquid current by the force of its impact.

An instrument for determining the specific gravities of liquids, and thence the strength spirituous liquors, saline solutions, etc.

An instrument for determining and recording the quantity of water discharged from a pipe, orifice, etc., in a given time.

An instrument used for the purpose of obtaining specimens of water from any desired depth, as in a river, a lake, or the ocean.

An instrument designed to mark the presence of water, especially in air. Weale.

An instrument for recording automatically the variations of the humidity of the atmosphere.

An instrument for measuring the degree of moisture of the atmosphere. Daniell's hygrometer, a form of hygrometer consisting of a bent glass tube terminating in two bulbs, the one covered with muslin, the other of black glass, and containing ether and a thermometer. Ether being poured on the muslin, the black ball, cool…