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1.
An act, sight or smell that evokes nausea and/or vomiting.
That rotten meat is vomituous! You went to the prom with Mike?? Gross, he is sooo vomituous!
by Jess515 August 14, 2006
 
2.
Feeling as if you are about to puke.
After those last two shots I'm feeling really VOMITUOUS!
by T. M. November 14, 2005
 
3.
vomit on a grand scale such that the vomit is overwhelming.
The laundry room was vomituous after my sick dogs vomituated all over the floor and the walls.
by Tracie B Roman August 24, 2006