hold the purse strings
掌握经济大权；管钱
口语·家庭或组织中的财务控制
英文释义
to control or have authority over the spending or finances in a household or organization
例句
My wife holds the purse strings in our family, so I have to ask her for any extra cash.
典故来源
源自中世纪，当时人们将钱币装在系带的小袋中，掌管袋口系带的人即掌握财政大权。