ex·haust ( g-zôst )v. ex·haust·ed, ex·haust·ing, ex·hausts v.tr. 1. To wear out completely. See Synonyms at tire1. 2. To drain of resources or properties; deplete: tobacco crops that exhausted the soil. See Synonyms at deplete. 3. To use up completely: exhausted our funds before the month was out. 4. To treat completely; cover thoroughly: exhaust a topic. 5. To draw out the contents of; drain: exhaust a tank gradually. 6. To let out or draw off: exhaust vaporous wastes through a pipe. v.intr. To escape or pass out: Steam exhausts through this valve. n. 1. a. The escape or release of vaporous waste material, as from an engine. b. The fumes or gases so released. 2. A duct or pipe through which waste material is emitted. 3. An apparatus for drawing out noxious air or waste material by means of a partial vacuum. [Latin exhaur  re, exhaust- : ex-, ex- + haurre, to draw.]ex·haust ed·ly adv.ex·haust er n.ex·haust  i·bili·ty n.ex·haust i·ble adj.ex·haust ing·ly adv. |
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