Learn English – Word for the sound made while vomiting

This is a tricky one to come up with one apt word without getting into various connotations:

• A moan is a low sound, generally.
• A whimper sounds plaintive or submissive.
• A grunt or a groan doesn't sound ladylike.
• A squeal sounds too drawn out.

I would be surprised if there's actually a definitive word for it. To describe the sound in that context, I might say squeak, which is a sort of cute sound.

The words "bellow", "shout" and "yell" all have similar definitions, but are different enough so that depending on your preference and situation at least one will be accurate without being an onomatopoeia. "Bellow" would be my choice since it's defined as "the deep roaring sound characteristic of a bull". Notice that the sound is described as roaring, but referred to as a bellow. This is attributable to the fact that cows low, so bulls can be expected to make a bull-low. I'm not sure if this is 'abstract' enough, but having the sound identified with the type of animal, as opposed to the noise the animal actually makes strikes me as fairly uncommon.