一掷千金
一掷千金[yī zhì qiān jīn]1.■(下一次注就上千金) gamble at high stakes; stake a thousand taels of silver at one throw; spend gold on one throw; stake tens of thousands of cash in one throw of the dice(任意挥霍) spend a big sum of money lavishly; spend money like water; spend money recklessly [extravagantly]; throw away money like dirt