Hornet flying around chair (6)
I believe the answer is:
throne
'chair' is the definition.
(throne is a kind of chair)
'hornet flying' is the wordplay.
'flying' is an anagram indicator (letters fly around into new positions).
'hornet' is an anagram of 'THRONE'.
'around' acts as a link.
(Other definitions for throne that I've seen before include "toilet" , "Seat of royalty" , "Seat of authority" , "Seat of monarch" , "Oh rent out this seat" .)