n. bottom part of the pharynx, the part of the throat that connects to the esophagus
the GNU version of the Collaborative International Dictionary of English
n. An appendage or fold on the lower side of the pharynx, in certain insects.
The Century Dictionary and Cyclopedia
n. In entomology, a fleshy organ, generally strengthened with chitinous sclerites, projecting from the floor of the mouth at the opening of the pharynx or gullet.
Word Usage
"Hypopharyngeal sclerites: in bees, a pair of strap-like pieces along the hypopharynx to the mentum: see also epipharyngeal sclerites."