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Definition of trachea : 1. One of the large cells in woody tissue which have spiral, annular, or other markings, and are connected longitudinally so as to form continuous ducts.
2. One of the respiratory tubes of insects and arachnids.
3. The windpipe. See Illust. of Lung.

Synonyms:

windpipe

Usage examples:

• The alterations may extend to the nasal cavities, the larynx, the trachea, the lung, the esophagus, the intestines, and to the hoof. - "Special Report on Diseases of Cattle", U.S. Department of Agriculture J.R. Mohler.
• The bronchial murmur is a harsh, blowing sound, heard in normal conditions by applying the ear over the lower part of the trachea, and may be heard to a limited extent in the anterior portions of the lungs after severe exercise. - "Special Report on Diseases of Cattle", U.S. Department of Agriculture J.R. Mohler.
• Such openings, in man, are met with, either as the results of accidents, of suicidal attempts, or of operations performed on the larynx or trachea for the relief of disease. - "The Mechanism of the Human Voice", Emil Behnke.