It means that people are unable to agree on something. They are at an impass.
The idiom "be at loggerheads" originated from the 17th-century term "loggerhead," which referred to a long-handled iron instrument used for heating liquids. When in a disagreement or conflict, people's heads metaphorically resemble the heated loggerheads, hence the phrase.
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 means there are not many loggerhead turtles left. It doesn't mean anything because they are not endangered. They are listed as threatened. No one knows what the population numbers really are.
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.
Nothing. You have left out part of the idiom. Perhaps you mean "your hands are tied," which means that you have no power to do anything in a given situation.