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1. Oxford American Dictionary

   trachea

   • IPA[ˈtrākēə]

   美式

   • n.
     a large membranous tube reinforced by rings of cartilage, extending from the larynx to the bronchial tubes and conveying air to and from the lungs; the windpipe.；each of a number of fine chitinous tubes in the body of an insect, conveying air directly to the tissues.

   • noun: trachea, plural noun: tracheae

2. • 釋義

   n.

   名詞

   • 1. a large membranous tube reinforced by rings of cartilage, extending from the larynx to the bronchial tubes and conveying air to and from the lungs; the windpipe.
   • ▪ each of a number of fine chitinous tubes in the body of an insect, conveying air directly to the tissues.
   • ▪ any duct or vessel in a plant, providing support and conveying water and salts.