Trachea

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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]

From WordNet (r) 2.0 [wn]:

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