cough /ˈkɔf/
 咳嗽(vi.)咳嗽(vt.)咳出
 cough /ˈkɔf/ 不及物動詞
 咳嗽
 Cough v. i. [imp. & p. p. Coughed p. pr. & vb. n. Coughing.]  To expel air, or obstructing or irritating matter, from the lungs or air passages, in a noisy and violent manner.
 Cough, v. t.
 1. To expel from the lungs or air passages by coughing; -- followed by up; as, to cough up phlegm.
 2. To bring to a specified state by coughing; as, he coughed himself hoarse.
 To cough down, to silence or put down (an objectionable speaker) by simulated coughing.
 Cough, n.
 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.
 2. The more or less frequent repetition of coughing, constituting a symptom of disease.
 Stomach cough, Ear cough, cough due to irritation in the stomach or ear.
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 cough
      n 1: sudden expulsion of air from the lungs that clears the air
           passages; a common symptom of upper respiratory
           infection or bronchitis or pneumonia or tuberculosis
           [syn: coughing]
      2: the act of exhaling air suddenly with a noise [syn: coughing]
      v : exhale abruptly, as when one has a chest cold or congestion;
          "The smoker coughs all day"