Old king confused panel and hook (7)
I believe the answer is:
grapnel
'hook' is the definition.
(grapnel is a kind of hook)
'old king confused panel' is the wordplay.
'old king' becomes 'GR' (Georgius Rex, Latin for King George).
'confused' indicates an anagram.
'panel' with letters rearranged gives 'apnel'.
'gr'+'apnel'='GRAPNEL'
'and' acts as a link.
(Other definitions for grapnel that I've seen before include "Rope/hook device" , "Light anchor for small boats" , "Small anchor with several flukes" , "Grappling hook" , "Clawed grasping device" .)