The idiom of biggest wheels is often seen shortened to big wheel. A big wheel is a person who has power in an organization, including lower-level bosses, managers, and CEOs.
Clockwork isn't an idiom that I'm aware of. The work means something that is mechanical, driven by old-fashioned gears and wheels. It can also mean something that runs as smoothly as if mechanical, or something repetitive and mechanical-seeming.
I believe you mean a fifth wheel, as most vehicles have four wheels. It means that you don't fit into the group. You are an extra person when everyone else is paired up.
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.
yes they do there bigger then semi truck wheels also the mall truck has the biggest wheels
"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
This is not an idiom. It is a measurement. $100,000 is how you write it in numbers.
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.
Simply its mean a bully.