It’s our ability to hold information for a brief period of time, so we can use it for our cognitive tasks.
“a limited amount of information that can be temporarily maintained in an accessible state, making it useful for many cognitive tasks.”Adams, E. J., Nguyen, A. T., & Cowan, N. (2018). Theories of Working Memory: Differences in Definition, Degree of Modularity, Role of Attention, and Purpose. Language, speech, and hearing services in schools, 49(3), 340–355. https://doi.org/10.1044/2018_LSHSS-17-0114