Heard 'Clear off!' in a broad brogue, say (4)
I believe the answer is:
shoe
'a broad brogue say' is the definition.
(brogue is a type of shoe)
'heard clear off' is the wordplay.
'heard' shows a homophone (sound like).
'clear off' becomes 'shoo' (both can be used to tell someone to go away).
'shoo' sounds like 'SHOE'.
'in' is the link.
(Other definitions for shoe that I've seen before include "Last product" , "Brogue, for example" , "Clothing item" , "Brogue or loafer, perhaps" , "Trainer perhaps" .)