Flush gets stuck (5)
I believe the answer is:
gored
This clue is a double definition.
'flush' is the first definition.
(to go red is to flush or blush)
'stuck' is the second definition.
'gets' is the link.
(Other definitions for gored that I've seen before include "Wounded by a bull" , "having a puncture?" , "Pierced by bull's horns" , "Injured by a horn or tusk" , "like an unfortunate matador?" .)