This means that once something has been done, you have to live with the consequences as it can't be undone.
It means that you are giving up you cant handle the pressure anymore
It means that you were about to get fussed at, or have to confess something, but you were interrupted just in time. The image is of the school bell ringing to interrupt the teacher about to assign homework.
It means that something seems familiar, but you can't quite bring it to mind. The image is of a bell ringing in the distance. You might say "the name rings a bell" when you know you are familiar with someone, but you can't really remember them clearly.
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.
It means she cant dance well, and the idiom is wrong, it should be two left feet.
"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
The idiom "a slap on the wrist" means receiving a mild or lenient punishment for a wrongdoing. It implies that the consequence is not severe or harsh.
This is not an idiom. It is a measurement. $100,000 is how you write it in numbers.