go over the hill, Slang. a. to break out of prison. b. to absent oneself without leave from one's military unit. c. to leave suddenly or mysteriously: Rumor has it that her husband has gone over the hill. over the hill, a. relatively advanced in age. b. past one's prime.
Over there.
Over a Barrel: helpless, at a disadvantage
It is not an idiom, it means your nose is itching.
"Head over heels in love" would be one idiom.
idiom means expression like a page in a book
"Over the hill" can mean literally over the top of the hill and down the other side. It can also be an idiom meaning that someone is old. The image is that you are past the "hill" of middle age and on the way down the other side to old age. This can be a serious statement, but is usually a humorous one, where someone tells a friend they are "over the hill" at an early age.
Over there.
This is not an idiom. "It's over" means that it is over, or finished, or done. Whatever "it" refers to has concluded.
Over a Barrel: helpless, at a disadvantage
It's not an idiom because it means just what it seems to mean. You should stay on the side of the fence that you are currently on and not climb over.
sit down come over to
I don't know what you mean by "common phrases of," but the idiom "over and above" just means "more than what was agreed upon."
Euphemism for old.
This isn't an idiom because you can figure it out if you look up the word "pins." It is a SLANG term meaning legs, so you knocked him over.
In a difficult situation that causes people to be worried and upset over something or someone
RFP is not an idiom. It's an abbreviation.
It's not really an idiom. It means "what are you thinking about."