The spelling of the word "bull eyen" is quite peculiar. It is actually derived from the phrase "bull's eye" but with added archaic suffix "-en". The main stress falls on the first syllable "bull" which is pronounced as /bʊl/. The second syllable "eyen" is pronounced as /ˈaɪən/ with a long "i" sound followed by a schwa sound. The IPA transcription of "bull eyen" would be /bʊl ˈaɪən/. Despite its unique spelling, this word is seldom used in modern English.