trachea

2 definitions found

trachea - Collaborative International Dictionary of English v.0.48 :

  Trachea \Tra"che*a\, n.; pl. Tracheae. [NL.,from L. trachia,
     Gr. trachei^a (sc. ? windpipe), from ? rough, rugged: cf. F.
     trach['e]e.]
     [1913 Webster]
     1. (Anat.) The windpipe. See Illust. of Lung.
        [1913 Webster]
  
     2. (Zool.) One of the respiratory tubes of insects and
        arachnids.
        [1913 Webster]
  
     3. (Bot.) 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.
        [1913 Webster]

trachea - WordNet (r) 2.1 (2005) :

  trachea
      n 1: membranous tube with cartilaginous rings that conveys
           inhaled air from the larynx to the bronchi [syn: trachea,
           windpipe]
      2: one of the tubules forming the respiratory system of most
         insects and many arachnids