Definitions

from The Century Dictionary and Cyclopedia

  • n. In entomology, a dilatation of the trachea of certain insects, which enables them to change their specific gravity by filling the trachea with or emptying it of air.
  • n. In ichthyology, a vesicle containing air, connected with the swim-bladder and also with the ear-parts.
  • n. Same as air-float.

Etymologies

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