2cgvhnj - This was an Everyman clue that mamyalynne and I recognised.
It parses as kookaburra (strident Australian) (+ on radio = sounds like) ("cooker borough" - where to buy BBQs)
There is absolutely no way that anyone would come up with a sounds like for cooker borough unless they had the full clue.
That is why it is so important that you always provide the full clue, the letter count and any letters that you have already worked out. Help us to help you, please
Anyway - good luck with it!