Also included in Spies, Pop Flies, and French Fries is a special feature called Operation Explore More, which encourages readers to undertake their own intelligence-gathering operations, using resources the author has compiled at the end of each chapter.
Medical Definition of COUGH. : to expel air from the lungs suddenly with an explosive noise usually in a series of efforts. transitive verb. Dictionary: Definition of cough.
The cough reflex consists of three phases: an inhalation, a forced exhalation against a closed glottis, and a violent release of air from the lungs following opening of the glottis, usually accompanied by a distinctive sound.[1] Coughing is either voluntary or involuntary. Frequent coughing usually indicates the presence of a disease.