To keep struggling and not give up.
Hang in there!
it means to stay in one particular area, not doing anything in particular. Often, you "hang around" with your friends.
If someone hangs you out to dry, it means that they have left you to take the consequences and escaped themselves.
It's not really an idiom. It means "what are you thinking about."
RFP is not an idiom. It's an abbreviation.
It is not an idiom, it means your nose is itching.
idiom means expression like a page in a book
It's not an idiom. It means the tip of your nostril.
"Sieve" is not an idiom. See the related link.
This is not an idiom. It is a measurement. $100,000 is how you write it in numbers.
Simply its mean a bully.
The idiom your blood is boiling usually means that you are mad/furious.