Crossword Genius

Boss requiring endless scrutiny (4)

Ross

I believe the answer is:

stud

'boss' is the definition.
(both can mean a metal decoration)

'endless scrutiny' is the wordplay.
'endless' means to remove the last letter.
'scrutiny' becomes 'study' (study is a kind of scrutiny).
'study' with its final letter taken away is 'STUD'.

'requiring' acts as a link.

(Other definitions for stud that I've seen before include "Virile man" , "Collar button or horse farm" , "Wall timber" , "Male pin-up" , "Horse-breeding farm" .)

I've seen this clue in The Times.
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