American Heritage® Dictionary of the English Language, Fourth Edition
- n. A nematode worm (Syngamus trachea) that infects the tracheas of certain birds and causes gapes.
Century Dictionary and Cyclopedia
- n. A nematoid worm, Syngamus trachealis, the cause of gapes in fowls.
- n. A parasitic nematode worm, Syngamus trachea, that infects the tracheas of some birds and causes the disease gapes
GNU Webster's 1913
- n. (Zoöl.) The parasitic worm that causes the gapes in birds. See
“ Gapeworms "lodge in the hen's throat" ... nuts! The larvae of the gapeworm live and mature in the lungs, trachea and bronchi, causing a severe pneumonia in young birds.”
Looking for tweets for gapeworm.