He lost quite a bit of money on the slot machines.
Tips
memory
Literally 'coin-eating tiger' — 角子 jiǎozi is an old word for a small coin, and the machine devours them one after another like a hungry tiger. A vivid calque of the English 'one-armed bandit'.
register
More common in Taiwan and overseas Chinese communities. Mainland speakers usually say 老虎机 lǎohǔjī (literally 'tiger machine') as the everyday short form.
