from the GNU version of the Collaborative International Dictionary of English
- n. One of the gill-like breathing organs of certain aquatic insect larvæ. They contain tracheal tubes somewhat similar to those of other insects.
from The Century Dictionary and Cyclopedia
- n. A breathing-organ of certain aquatic insect-larvæ, combining the character of a gill with that of an ordinary trachea.
Sorry, no etymologies found.