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1 definition by Chachoregard

 
1.
Hiyo(Ih-Yoh; noun): The small short and sweet combination of the salutations of "Hi" , "Yo" , "Hey" compiled and shortened to a short and sweet, yet slightly annoying new salutation. Makes it easier to say "Hey" when you could just scream "HIIIIIIIIIYOOOOOH!!" and annoys some people.

Other versions of "Hiyo":
"Heyo" , "Heya" , "Hiya" ,"Hoyo" etc.
"Hiyo is just a more complicated way of saying Hi or Hey, Or Yo.That easy!"
by Chachoregard September 03, 2005