Checking refers to an act or process of verifying something, typically in order to ensure that it is correct, accurate and complete. It can also refer to a systematic examination or inspection, often carried out by someone with specialized knowledge or skills. In the context of banking, checking means having access to a demand deposit account which allows you to write checks (cheques) against money that has been deposited. This type of account typically comes with a checkbook and enables you to make purchases or pay bills by writing a check without needing to carry cash.