What is "syngamus trachealis"

Gape \Gape\, n.

1. The act of gaping; a yawn.
   --Addison.

2. (Zo["o]l.) The width of the mouth when opened, as of birds, fishes, etc. The gapes.

   1. A fit of yawning.

   2. A disease of young poultry and other birds, attended with much gaping. It is caused by a parasitic nematode worm ( Syngamus trachealis), in the windpipe, which obstructs the breathing. See Gapeworm.