oi

exclamation3

1. •
   (UK, Commonwealth) a loud call like "hey" to make someone look at you or listen

   • Oi, you with the red hat – what do you think you're doing?
   • Oi! Stop that!
2. •
   (UK, Commonwealth) An expression of surprise.

   • Oi! This is new!
3. •
   (UK, Commonwealth) An informal greeting, similar to hi.

   • Oi! How's it going?

noun2

1. •
   An exclamation of 'oi'.

   • Such is the vocal power of water bailiffs and farmers that their ‘Ois!’ can be projected at small boys from anything up to five miles away and still induce heart-failure. — 1983
2. •
   (UK) A working-class punk rock subgenre of the 1970s, sometimes associated with racism.

   • Oi! is characterized by cleaner guitars and slower tempos than most punk music, and many Oi! songs feature sing-along, "soccer chant" choruses. — 2012

pronoun1

1. •
   Eye dialect of I

   • Why, where be oi, and what be oi a doin’, / A sleepin’ out, just when the dews du rise? — 1877

noun4

1. •
   Initialism of opportunistic infection.
2. •
   Initialism of osteogenesis imperfecta.
3. •
   Abbreviation of object of interest.
4. •
   Initialism of orbital index