more than something; in addition to something. (Informal. Fixed order.)
I'll need another twenty dollars over and above the amount you have already given me.You've been eating too much food over and above what is required for good nutrition. That's why you're gaining weight.
Idiom
over and above somethingover and above (something)
in addition to something.
We spent $1000 on hotels, and that's over and above food and entertainment.