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ll frame, supported at the top by stays or guys, with suitable tackle for hoisting heavy weights, as stones in building. Derrick crane, a combination of the derrick and the crane, having facility for hoisting and also for swinging the load horizontally.

eparate from anything; to disengage. [A vapor] detaching, fold by fold, From those still heights. Tennyson.

The act, process, or result of any accurate measurement, as of length, volume, weight, intensify, etc.; as, the determination of the ohm or of the wave length of light; the determination of the salt in sea water, or the oxygen in the air.

Done with dexterity; skillful; artful; as, dexterous management. "Dexterous sleights of hand." Trench.

Pertaining to the scale of eight tones, the eighth of which is the octave of the first. Diatonic scale (Mus.), a scale consisting of eight sounds with seven intervals, of which two are semitones and five are whole tones; a modern major or minor scale, as distinguished from the chromatic scale.

which includes those with two gills, an apparatus for emitting an inky fluid, and either eight or ten cephalic arms bearing suckers or hooks, as the octopi and squids. See Cephalopoda.

sting rope winds upon one part as it unwinds from the other, and a pulley sustaining the weight to be lifted hangs in the bight of the rope. It is an ancient example of a differential motion.

the sun or moon; -- a term used to express the quantity of an eclipse; as, an eclipse of eight digits is one which hides two thirds of the diameter of the disk.

Measure in a single line, as length, breadth, height, thickness, or circumference; extension; measurement; -- usually, in the plural, measure in length and breadth, or in length, breadth, and thickness; extent; size; as, the dimensions of a room, or of a ship; the dimensions of a farm, of a kingdom. Gentlemen of more t…

Lintel. -- Discharging piece, Discharging strut (Arch.), a piece set to carry thrust or weight to a solid point of support. -- Discharging rod (Elec.), a bent wire, with knobs at both ends, and insulated by a glass handle. It is employed for discharging a Leyden jar or an electrical battery. See Discharger.…

The quantity of anything, as water, displaced by a floating body, as by a ship, the weight of the displaced liquid being equal to that of the displacing body.

ay be in disproportion to the body; the disproportion of the length of a building to its height.

Loss or want of reputation; ill character; disesteem; discredit. At the beginning of the eighteenth century astrology fell into general disrepute. Sir W. Scott.

brutes; as, a distemper in dogs; the horse distemper; the horn distemper in cattle. They heighten distempers to diseases. Suckling.

es containing 371.25 grains of silver and 41.25 grains of alloy, that is, having a total weight of 412.5 grains.

ar (except in leap year, when the letter is changed at the end of February). After twenty-eight years the same letters return in the same order. The dominical letters go backwards one day every common year, and two every leap year; e. g., if the dominical letter of a common year be G, F will be the dominical letter for…

A game played by two or more persons, with twenty-eight pieces of wood, bone, or ivory, of a flat, oblong shape, plain at the back, but on the face divided by a line in the middle, and either left blank or variously dotted after the manner of dice. The game is played by matching the spots or the blank of an unmatched h…

ry engine not used for propelling, but for pumping water into the boilers, raising heavy weights, and like purposes. -- Donkey pump, a steam pump for feeding boilers, extinguishing fire, etc.; -- usually an auxiliary. -- Donkey's eye (Bot.), the large round seed of the Mucuna pruriens, a tropical leguminous plant.…

e value; thus, a dotted semibreve is equal to three minims, and a dotted quarter to three eighth notes. -- Dotted rest, a rest lengthened by a dot in the same manner as a dotted note.

To play tricks; to use sleights; to play false. What penalty and danger you accrue, If you be found to double. J. Webster.