0 the part of the body between your head and your shoulders -- cuello
1 the part of the body between the shoulders and head -- cuello [ masculine, singular ]
2 the opening of a piece of clothing, which your head goes through -- cuello [ masculine, singular ]
3 a long thin part of an object -- cuello [ masculine, singular ]
5 competing closely with -- uno/una contra uno/una
The two candidates are neck and neck. Los dos candidatos están a la par.
6 indicates a particular area where sth happens or sb lives -- lares