Irritation in summit that's audible (5)
I believe the answer is:
pique
'irritation' is the definition.
(I know that irritation can be written as pique)
'summit that's audible' is the wordplay.
'summit' becomes 'peak' (mountain peak).
'that's audible' indicates a 'sounds like' (homophone) clue.
'peak' is a homophone of 'PIQUE'.
'in' is the link.
(Other definitions for pique that I've seen before include "Vexation" , "Nettle" , "Resentful feeling" , "Sudden irritation" , "score at cards" .)