something or someone insignificant. An inconsequential amount
It means someone is telling you a small hint to remind you of something
It's what you say when you meet someone unexpectedly such as: "Hey Joe" "What's up. It's a small world isn't it?"
It means you should be willing to risk a small amount in order to get a larger amount back.
It means by a very small margin, as in "it was nip and tuck whether we would win the game or not."
It is not an idiom, it means your nose is itching.
It's not really an idiom. It means "what are you thinking about."
RFP is not an idiom. It's an abbreviation.
patatoes
Because patatoes
"Sieve" is not an idiom. See the related link.
It's not an idiom. It means the tip of your nostril.
idiom means expression like a page in a book