Centre of a dartboard (5-3)
(Other definitions for bulls-eye that I've seen before include "Light - gold - sweet" , "Centre of darts board" , "Boiled sweet" , "The centre of the target, as in darts" , "Window - sweet" .)
(Other definitions for bull that I've seen before include "fifty on board" , "Tripe" , "Papal edict - nonsense" , "rubbish" , "Stock Exchange speculator" .)