It means that you were "coldly" ignored or rebuffed, as though someone shut the door and left you outside in the cold weather.
get scared or terrified
cold figures
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.
meaning of cold war
"Catching a cold" is an idiom - it means to come down with the symptoms of the cold virus.
It's not an idiom because it means just what it looks like - someone is very cold. In this context, you would think of the alternate meaning of cold, which is unemotional or unapproachable. When you see "as ___ as ___" or "___er than ___" you are dealing with a simile.
"He has got" means "he has." This can mean "he owns it," or "he is holding it," or "he has control of it." You might hear "He has got every CD that band has ever made," or "He has got a cold."
It's not really an idiom. It means "what are you thinking about."
It is not an idiom, it means your nose is itching.
RFP is not an idiom. It's an abbreviation.
"Cold-blooded" means lacking emotion or feeling, such as a cold-blooded killer.
"Sieve" is not an idiom. See the related link.