How do you spell coldasack?

"Coldasack" is not a recognized English word. It's likely a misspelling or a made-up word.

Are you thinking of one of these words?

* Cul-de-sac: A dead-end street.

* Coldsack: A dark nebula in the constellation Sagittarius.

* Cold sack: A slang term for a bag of ice.

Please clarify what word you are trying to spell, and I'll be happy to help!