彼は腕時計を質草にして当座の金を借りた。
He pawned his wristwatch to borrow some money to tide him over.
期限までに返済できず、質草が流れてしまった。
He couldn't repay by the deadline, and the item he had pawned was forfeited.
昔は着物がよく質草になった。
In the old days, kimono were often used as items to pawn.