Good, free, smooth American football (8)
I believe the answer is:
gridiron
'american football' is the definition.
(I've seen this before)
'good free smooth' is the wordplay.
'good' becomes 'g' (abbreviation).
'free' becomes 'rid' ('rid' can be a synonym of 'free').
'smooth' becomes 'iron' (I've seen this before).
'g'+'rid'+'iron'='GRIDIRON'
(Other definitions for gridiron that I've seen before include "Used for grilling or American football" , "on which Lawrence was roasted" , "The field of play in American football" , "Scene of American football" , "Grill - American football field" .)