Guitar part with frets (4)

I believe the answer is:

neck

(Other definitions for neck that I've seen before include "Narrow connecting part - smooch" , "Narrow part of e.g. isthmus" , "Isthmus; impudence (sl.)" , "Canoodle; isthmus" , "Deeply involved, up to this" .)

I've seen this clue in the USA Today.

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