Please put quotation marks (or italicize) arond the sentence you're asking about, versus parenthesis.
I think we need a bit more context, as well as a source. Right now, we don't have enough context to answer, or even be sure it's an idiom. Can you post a few more lines before and after this sentence?
Forum rules require you to post the source of anything you quote as well, so please include that along with extra lines.