neck
From ZooTerms (Dictionary of Invertebrate Zoology)
neck (noun; Anglo-Saxon hnecca, neck): 1. (Arthropoda: Insecta) The slender connecting structure between head and thorax where the head is free.
2. (Mollusca) Distal part of the base of a siphonostomatous shell, starting where outline of left side changes from convex to concave. 4. (Platyhelminthes: Cestoda) The unsegmented area between the scolex and strobilae.
3. (NEMATA) The slender, anterior portion of the body containing the esophagus.
