Neck n. : The part of an animal which connects the head and the trunk, and which, in man and many other animals, is more slender than the trunk.

Neck n. : Any part of an inanimate object corresponding to or resembling the neck of an animal

Neck n. : The long slender part of a vessel, as a retort, or of a fruit, as a gourd.

Neck n. : A long narrow tract of land projecting from the main body, or a narrow tract connecting two larger tracts.

Neck n. : That part of a violin, guitar, or similar instrument, which extends from the head to the body, and on which is the finger board or fret board.

Neck n. : A reduction in size near the end of an object, formed by a groove around it; as, a neck forming the journal of a shaft.

Neck n. : the point where the base of the stem of a plant arises from the root.

Neck v. t. : To reduce the diameter of (an object) near its end, by making a groove around it; -- used with down; as, to neck down a shaft.

Neck v. t. & i. : To kiss and caress amorously.

Example:
When does Neck and back pain start to occur during pregnancy?

Taxonomy
neck, human neck, C1, Neck pain, jaw, free encyclopedia, cervical spine, triangle, secondarily, Anatomy, tetrapod, rectus capitis, Bony anatomy, vertebral body, neck supports, middle line, functionality, pain.

Defination from the web:
neck supports the weight of the head and protects the nerves that carry sensory and motor information from the brain down to the ... At the side the outline of the sternomastoid muscle is the most striking mark; it divides the anterior triangle of the neck from the posterior. ...