In America, rib outlets serving deer (7)
I believe the answer is:
caribou
'deer' is the definition.
(caribou is a kind of deer)
'in america rib outlets' is the wordplay.
'in' indicates the answer is hidden within the clue.
'CARIBOU' is hidden in the letters of 'america rib outlets'.
'serving' is the link.
(Other definitions for caribou that I've seen before include "Arctic deer - a Rio cub (anag)" , "US reindeer" , "Creature" , "North American reindeer" , "North American Arctic deer" .)