Glides in country dance, beset by impertinent talk (7)
I believe the answer is:
sashays
'glides' is the definition.
(I've seen this in another clue)
'country dance beset by impertinent talk' is the wordplay.
'country dance' becomes 'hay' (hay is a country dance style).
'beset by' indicates putting letters inside ('beset' could historically mean 'cover').
'impertinent talk' becomes 'sass' (I've seen this in another clue).
'hay' inserted within 'sass' is 'SASHAYS'.
'in' is the link.
(Other definitions for sashays that I've seen before include "Dance moves" , "Walks in showy casual way, mostly in America" .)