n. In ornithology, the lower part of the throat; the fore part of the neck, between the gula and the pectus. See cut under bird.n. In entomology: A name proposed by Knoch and used by some writers to indicate the lower surface of the prothorax of a beetlen. A name given by Kirby to the basal piece on the lower side of an insect's head, now generally known as the gula.n. A name sometimes applied to the occipital foramen, an orifice in the back of the head, through which the alimentary canal and other organs pass to the thorax.