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The Collaborative International Dictionary of English v.0.48 (gcide)

Cough \Cough\ (k?f), v. i. [imp. & p. p. {Coughed} (k?ft); p.
pr. & vb. n. {Coughing}.] [Cf. D. kuchen, MHG. k?chen to
breathe, G. keuchen to pant, and E. chincough, the first part
of which is prob. akin to cough; cf. also E. choke.]
To expel air, or obstructing or irritating matter, from the
lungs or air passages, in a noisy and violent manner.
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Cough \Cough\, v. t.
1. To expel from the lungs or air passages by coughing; --
followed by up; as, to cough up phlegm.
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2. To bring to a specified state by coughing; as, he coughed
himself hoarse.
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{To cough down}, to silence or put down (an objectionable
speaker) by simulated coughing.
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Cough \Cough\, n. [Cg. D. kuch. See {Cough}, v. i. ]
1. A sudden, noisy, and violent expulsion of air from the
chest, caused by irritation in the air passages, or by the
reflex action of nervous or gastric disorder, etc.
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2. The more or less frequent repetition of coughing,
constituting a symptom of disease.
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{Stomach cough}, {Ear cough}, cough due to irritation in the
stomach or ear.
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