from The Century Dictionary.

  • noun A large conduit for supplying pure air to, or for removing foul or heated air from, theaters, etc.


Sorry, no etymologies found.


  • Thus when the pupal cuticle is cast, they are readily broken there, and the cuticle of the midge forming beneath has a spiracular opening into the main air-trunk, ready for use during the insect's aerial life.

    The Life-Story of Insects


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