Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Either of two main branches of the trachea, leading directly to the lungs.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Either of two airways, which are primary branches of the trachea, leading directly into the lungs.

from the GNU version of the Collaborative International Dictionary of English

  • n. One of the subdivisions of the trachea or windpipe; esp. one of the two primary divisions.

from The Century Dictionary and Cyclopedia

  • n. Either of the two main branches of the trachea: also sometimes used to denote any small bronchial tube. See trachea, lung, and cut under thorax.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. either of the two main branches of the trachea

Etymologies

New Latin, from Greek bronkhos, windpipe.
(American Heritage® Dictionary of the English Language, Fourth Edition)

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