a peg to hang something on
成語所屬單字hang
a peg to hang something on — 慣用語
1. Something that gives you an excuse or opportunity to discuss something.
1.慣用語
釋義
藉口，機會
Something that gives you an excuse or opportunity to discuss something.
例句
The news story was a peg to hang his political views on.
She used the question as a peg to hang her ideas on.