Items spread around yellow primarily in snooker (6)
I believe the answer is:
stymie
'snooker' is the definition.
(thesaurus)
'items spread around yellow primarily' is the wordplay.
'spread' indicates anagramming the letters.
'around' means one lot of letters goes inside another.
'primarily' says to take the initial letters.
The first letter of 'yellow' is 'y'.
'items' anagrammed gives 'stmie'.
'stmie' enclosing 'y' is 'STYMIE'.
'in' acts as a link.
(Other definitions for stymie that I've seen before include "Hinder, obstruct, thwart" , "Block or thwart, perhaps in golf" , "Block or thwart, perhaps on putting green" , "Old putting problem" , "Hinder the progress of (something)" .)