"Hanging out" means to be seen at a particular place or venue (eg a cafe or bar) or with a particular group of people.
Or just talking with friends on the phone.
It refers to a day being noteworthy or of hanging a banner of announcement, usually of good news.
it means to stay in one particular area, not doing anything in particular. Often, you "hang around" with your friends.
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.
It's not an idiom. It means the tip of your nostril.
idiom means expression like a page in a book
"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.
If you are "under the weather," then you are feeling ill. The image is of a dark cloud hanging over you, making you miserable.The idiom "feeling a bit under the weather" means that a person is feeling slightly ill.
The idiom your blood is boiling usually means that you are mad/furious.