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1.
To vomit inside one's mouth, leaving a burning feeling, but never exiting the mouth.
Oh my gosh, Suzie just momited and her breath has stunk ever since.
by Daniel, Courtney, Kara, Kayla November 07, 2006
 
2.
Refers to a person who vomits up milk...or specifically curdled milk
what is this white stuff all over the baby's shirt? 'Oh it must be momit'!!
by caleeb August 11, 2013