What does bounsed a check and NSF mean?

[Kotow]

English Language Tests, Intermediate level

ESL/EFL Test #231 "Bank Terminology (1)", question 3

Robert ......... a check this past week. Now, he must pay two NSF charges because of it.

(a) hopped
(b) skipped
(c) bounced
(d) threw

English Language Tests, Intermediate level

ESL/EFL Test #231 "Bank Terminology (1)", answer 3

Robert bounced a check this past week. Now, he must pay two NSF charges because of it.

Correct answer: (c) bounced

Your answer was: ?
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What does bounsed a check, and NSF mean? Please give me full explanation.
Thank you in advance
Kotow

[Mister Micawber]

To bounce a cheque = To write a cheque with insufficient money in the account to pay the bearer; thus the cheque returns, or bounces from the bank.

NSF = Non Sufficient Funds
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Native English teacher at Mister Micawber's