n. In zoology and anatomy:n. The neck; the constricted part of the body between the head and the chest.n. The back of the neck; the scruff of the neck, regarded either as to its surface or its deep parts.n. That part of a rib which is situated between its head and shoulder; the neck of a rib, between the capitellum and the tuberculum.n. In entomology, the upper part of the occiput or back of the head, over the occipital foramen, and adjoining the vertex.n. Part of an organ likened to a neck: as, the cervix of the womb or bladder.n. In botany, a rhizome or rootstock.