lose your shirt
US /luːz jʊər ʃɜːrt/
UK /luːz jʊər ʃɜːrt/

1.
輸光所有錢, 損失慘重
to lose a lot of money, especially by gambling or a bad investment
:
•
He lost his shirt at the casino last night.
他昨晚在賭場輸光了所有錢。
•
Many investors lost their shirts during the stock market crash.
許多投資者在股市崩盤期間損失慘重。