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A maker of clocks, watches, or dials.

The art of constructing clocks or dials; horography.

les and art of constructing instruments for measuring and indicating portions of time, as clocks, watches, dials, etc.

fourth part of a solar day. -- The small hours, the early hours of the morning, as one o'clock, two o'clock, etc. -- To keep good hours, to be regular in going to bed early.

g to hydraulics, or to fluids in motion; conveying, or acting by, water; as, an hydraulic clock, crane, or dock. Hydraulic accumulator, an accumulator for hydraulic machinery of any kind. See Accumulator, 2. -- Hydraulic brake, a cataract. See Cataract, 3. -- Hydraulic cement, a cement or mortar made of hydraulic lim…

A kind of water clock, used anciently for measuring time, the water tricking from an orifice at the end of a graduated tube.

mirror on the index of a quadrant, sextant, etc. -- Index hand, the pointer or hand of a clock, watch, or other registering machine; a hand that points to something. -- Index of a logarithm (Math.), the integral part of the logarithm, and always one less than the number of integral figures in the given number. It is…

A clock that is designed to keep very accurate time.

is inclosed. -- Jack-of-the-buttery (Bot.), the stonecrop (Sedum acre). -- Jack-of-the-clock, a figure, usually of a man, on old clocks, which struck the time on the bell. -- Jack-on-both-sides, one who is or tries to be neutral. -- Jack-out-of-office, one who has been in office and is turned out. Shak. -- Jack t…

as the I. Orizabensis, and I. tuberosa. False jalap, the root of Mirabilis Jalapa, four-o'clock, or marvel of Peru.

A regular vibration, as of a pendulum. I love thee not a jar of the clock. Shak.

knell upon; to toll; to proclaim, or summon, by ringing. "Knolled to church." Shak. Heavy clocks knolling the drowsy hours. Tennyson.

the genus Coccinella and allied genera (family Coccinellidæ); -- called also ladybug, ladyclock, lady cow, lady fly, and lady beetle. Coccinella seplempunctata in one of the common European species. See Coccinella.

-- To leave off. (a) To desist from; to forbear; to stop; as, to leave off work at six o'clock. (b) To cease wearing or using; to omit to put in the usual position; as, to leave off a garment; to leave off the tablecloth. (c) To forsake; as, to leave off a bad habit. -- To leave out, to omit; as, to leave out a word…

Rotation in the direction of an outgoing right-handed screw; counter-clockwise rotation; -- applied chiefly to the turning of the plane of polarization of light.

A cooling periodical wind in the Isle of Cyprus, blowing from the northwest from eight o'clock, A. M., to the middle of the day or later.

Near the horizon; as, the sun is low at four o'clock in winter, and six in summer.

most important spring in a piece of mechanism, especially the moving spring of a watch or clock or the spring in a gunlock which impels the hammer. Hence: The chief or most powerful motive; the efficient cause of action.

Wonder. [R.] "Use lessens marvel." Sir W. Scott. Marvel of Peru. (Bot.) See Four-o'clock.

h day at mean noon. -- Mean time, time as measured by an equable motion, as of a perfect clock, or as reckoned on the supposition that all the days of the year are of a mean or uniform length, in contradistinction from apparent time, or that actually indicated by the sun, and from sidereal time, or that measured by th…