"Catching a cold" is an idiom - it means to come down with the symptoms of the cold virus.
idiom means expression like a page in a book
A common expression or idiom
Rolf Harris This expression is not an idiom.
Idiomatic expression
"You" is not an idiom. It is a pronoun.
no an idiom would be like "it's raining cats and dogs"
This is not an idiom. It means exactiy what it says - "advanced" means moved up or moved along, so the person is older.
Idiom
Quit bugging you-an expression.
This is not an idiom. When you see AS ___ AS ___ you are dealing with A Simile. They are comparing the temperature to a witch's supposedly cold body.
An idiom is an expression, the meaning of which is dependent on cultural context and social understanding. The meaning of the idiom is not predictable based on its constituent elements, but is merely an expression. An example of an idiom is "kicked the bucket". These words are not taken as literal, but as an idiomatic expression.
If you have cold feet, you are nervous about doing something. You could also ask someone if they were getting cold feet, meaning are they getting nervous. Tomorrow is your wedding - are you getting cold feet yet?"had reservations about a deal and backed out" Can also be used in the context of marriage... if a groom "has cold feet" it means that he is thinking of backing out of the wedding.getting nervous