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That which integrates; esp., an instrument by means of which the area of a figure can be measured directly, or its moment of inertia, or statical moment, etc., be determined.

The true meaning, understanding, or intention of a law, or of any legal instrument.

An instrument for measuring small movements, distances, or displacements by means of the interference of two beams of light; -- called also refractometer.

A short piece of instrumental music played between the parts of a song or cantata, or the acts of a drama; especially, in church music, a short passage played by the organist between the stanzas of a hymn, or in German chorals after each line.

An intervening agent or instrument. Cowper.

duce for the first time; -- applied commonly to the discovery of some serviceable mode, instrument, or machine. Thus first Necessity invented stools. Cowper.

An instrument or utensil made of iron; -- chiefly in composition; as, a flatiron, a smoothing iron, etc. My young soldier, put up your iron. Shak.

traws being thrown confusedly together on a table, to be gathered up singly by a hooked instrument, without touching or disturbing the rest of the pile. See Spilikin.

ular name of either of either of two species of Solanum (S. Pseudo-capsicum and S. capsicastrum), cultivated as ornamental house plants. They bear bright red berries of about the size of cherries. -- Jerusalem oak (Bot.), an aromatic goosefoot (Chenopodium Botrys), common about houses and along roadsides. -- Jerusale…

To strike or stab with a pointed instrument. L'Estrange.

ong the branches. Judas is said to have hanged himself on a tree of this genus (C. Siliquastrum). C. Canadensis and C. occidentalis are the American species, and are called also redbud.

An instrument invented by Professor Wheatstone, consisting of a reflecting knob at the end of a vibrating rod or thin plate, for making visible, in the motion of a point of light reflected from the knob, the paths or curves corresponding with the musical notes produced by the vibrations.

An instrument invented by Sir David Brewster, which contains loose fragments of colored glass, etc., and reflecting surfaces so arranged that changes of position exhibit its contents in an endless variety of beautiful colors and symmetrical forms. It has been much employed in arts of design. Shifting like the fragments…

A kind of toy or rude musical instrument, as a tube inside of which is a stretched string made to vibrate by singing or humming into the tube.

An instrument for dividing the cornea in operations for cataract.

An instrument by means of which the bolt of a lock is shot or drawn; usually, a removable metal instrument fitted to the mechanism of a particular lock and operated by turning in its place.

Furnished with keys; as, a keyed instrument; also, set to a key, as a tune. Keyed bugle. See Kent bugle.

A primitive Chinese instrument of the cittern kind, with from five to twenty-five silken strings. Riemann.

An instrument for producing curves by the combination of circular movements; -- called also kinescope.

ograph in which sounds appropriate to the scene are automatically uttered by the latter instrument.