If you are exhausted but keep going anyway, you are running on empty.
It's not an idiom because you can figure out the meaning if you think - if you're running around in circles, you're not getting anywhere. It's a metaphor for fruitless work.
The idiom 'sands of time' refers to the inexorable forward movement of time. It refers directly to the sand running through an hourglass.
"To be" is not an idiom - it's a verb.
Pest is not an idiom. It's a word.
The idiom "apple shiner" means the teacher's pet.
It's not an idiom because you can figure out the meaning if you think - if you're running around in circles, you're not getting anywhere. It's a metaphor for fruitless work.
The idiom 'sands of time' refers to the inexorable forward movement of time. It refers directly to the sand running through an hourglass.
"To be" is not an idiom - it's a verb.
No, "take a jump at the running donut" is not a recognized idiom in English. It seems to be a nonsensical phrase without a clear meaning or established usage. Idioms typically have figurative meanings that are widely understood, whereas this phrase does not fit that criteria.
Pest is not an idiom. It's a word.
The idiom "apple shiner" means the teacher's pet.
The meaning of the idiom in the pink of health means being in good health.
An idiom is a phrase that makes no sense unless you know the definition. Can a nose actually run somewhere? No, so this is an idiom.
The idiom means impress someone is egg on
It's not an idiom - to cope means to deal with, or to handle
"Old hand" is an idiom meaning having lots of experience.
It is not an idiom. It is an expression. The difference is that an idiom's meaning cannot be derived from the meaning of its individual words. In the expression wolfing down food, the meaning is clearly derived from the meaning of the words, and people have been saying it for hundreds of years.