1. cha-ching - Noun
2. cha-ching - Verb
3. cha-ching - Interjection
cha-ching
(US, Canada, Australia) Score!; wow!; said to celebrate something that has made or will make lots of money.
cha-ching (plural cha-chings)
Money, cash.
To make a cash register or slot machine noise.
To make the noise of coins falling.
Source: en.wiktionary.org