What is the meaning of lurched here. Is it closer to his stomach rose like he was going to throw up? or his stomach rolled upside down because he was shocked or disgusted?

Thank you

The latter, I think. His stomach made a sudden, convulsive 'jump', just for a second or two. It could be for many reasons.

Site Hint: Check out our list of pronunciation videos.
The latter, for sure.

And the sudden digust could be a result of stepping in a puddle of rancid vomit or finding out something that would scare him, ruin his life, etc.

Or he could be 5 years old, and his Mom caught him with his hand in the cookie jar.

Best wishes, Clive
Emotion: big smile
Thank you very much Clive and Agent Christopher,

Agent C- thank you for such a creative example, thanks God I've already eaten this morning:)
Students: We have free audio pronunciation exercises.