<p><strong>Verb</strong></p><ul><li>(used with object) to drain of strength or energy, wear out, or fatigue greatly, as a person.</li><li>to use up or consume completely; expend the whole of.</li><li>to draw out all that is essential in (a subject, topic, etc.); treat or study thoroughly.</li><li>to empty by drawing out the contents: to exhaust a tank of fuel oil.</li><li>to create a vacuum in.</li><li>to draw out or drain off completely.</li><li>to deprive wholly of useful or essential properties, possessions, resources, etc.</li><li>(Chemistry, Pharmacology) to deprive of ingredients by the use of solvents, as a drug.</li><li>to destroy the fertility of (soil), as by intensive cultivation.</li></ul><p><strong>Noun</strong></p><ul><li>(Machinery) the escape of steam or gases from the cylinder of an engine.</li><li>the steam or gases ejected.</li><li>(Also called exhaust system) the parts of an engine through which the exhaust is ejected.</li></ul><p><strong>End of Response</strong></p>