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2.
n. Hiccup and burp happening at the same time. Often associated with beer guzzling. More commony seen in hillbillies and Australians from Perth.
.....................................................................................
I'll tell you Bruce, a hiccaburp is not the worst thing that can come out of your surgeon when he's operating.

What's the worst thing?

A West Australian accent.
by Lobsterbeybuoy November 11, 2012
 
1.
A combination of a hiccup and a burp.
Person 1 : Did you just burp or hiccup?

Person 2 : Neither, it was a hiccaburp.
by EriBry March 05, 2008
 
3.
The oftentimes painfully embarrassing combination of a hiccup and a burp, most notable when accompanied by unexpected volume.
Pardon me! Sometimes those little hicca'burp (s) will just sneak right up on ya!
by book'oskeetdog March 07, 2011
 
4.
A strange, often loud noise, caused by air in the digestive system at cross purposes to itself, that results in something sounding more like a hiccup than a burp, but often induces in the hiccaburper a desire to excuse oneself as though one had burped.
"Excuse me."
"For what, dude, that was just a hiccaburp."
"Yeah I know, but I thought you'd think it was a burp."
"Shut up and quit being so self-conscious man."
by Salamander Fox October 13, 2011