Head, in slang
I believe the answer is:
nob
'head in slang' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for nob that I've seen before include "Person of wealth or high social position" , "Aristocrat" , "Jack" , "A posh gent - c'est bon" , "A slangy person of high rank - c'est bon" .)