Wiktionary
phr. (context idiomatic English) Or something else; allows for the existence of an unexpressed alternative to what was said.
Usage examples of "or what".
What the US-run contra forces did in Nicaragua, or what our terrorist proxies do in El Salvador or Guatemala, isn't only ordinary killing.
If he feels about things as I do, I need not concern myself with how he thinks about them, or what he does.
But shocked and in pain, he could achieve no rational explanation for himself for what he'd witnessed or what he'd done.
Swain asked his sister what sort of communications apparatus there was on the other end - whether Eliza, too, was squatting over a piece of pipe, or what.
Quinn, I would be able to answer that if you had shared the data with me, but since I only know what I've collected or what I've analyzed personally, I'd have to say, scientifically speaking, beats me.
Studying the path he'd taken, he was amazed he hadn't broken an ankle and had to admit a certain appreciation for who or what had created it.