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a, or the like, greater elasticity, durability, or hardness by heating with sulphur under pressure.

A small, hard tumor which is produced on the back of a horse by the heat or pressure of the saddle in traveling.

A bundle of straw, or other material, to relieve the pressure of burdens carried upon the head. [Prov. Eng.] Halliwell.

A barometer in which the changes of atmospheric pressure are indicated by the motion of a column of water instead of mercury. It requires a column of water about thirty-three feet in height.

Not able to sustain a great weight, pressure, or strain; as, a weak timber; a weak rope.

ty of the wind. Isobars and isotherms outline the general distribution of temperature and pressure, while shaded areas indicate the sections over which rain has just fallen. Other lines inclose areas where the temperature has fallen or risen markedly. In tabular form are shown changes of pressure and of temperature, ma…

An instrument to indicate the state of the atmosphere, especially changes of atmospheric pressure, and hence changes of weather, as a barometer or baroscope. Poor man's weatherglass. (Bot.) See under Poor.

Hence, pressure; burden; as, the weight of care or business. "The weight of this said time." Shak. For the public all this weight he bears. Milton. [He] who singly bore the world's sad weight. Keble.

To pass, or to draw off, (as steam) through narrow ports, or the like, thus reducing its pressure or force by friction.