Irritated angler secures quiet hook (7)
I believe the answer is:
grapnel
'hook' is the definition.
(grapnel is a kind of hook)
'irritated angler secures quiet' is the wordplay.
'irritated' is an anagram indicator (I've seen this in other clues).
'secures' is an insertion indicator.
'quiet' becomes 'p' (music symbol for 'piano').
'angler' with letters rearranged gives 'granel'.
'granel' enclosing 'p' is 'GRAPNEL'.
(Other definitions for grapnel that I've seen before include "Small anchor with three or four flukes" , "Hook on rope" , "Grappling hook" , "Light anchor for small boats" , "Small anchor with several flukes" .)