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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]

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