What does MEMORY mean?

noun

1. something that is remembered“search as he would, the memory was lost”
2. the cognitive processes whereby past experience is remembered“he can do it from memory”
3. the power of retaining and recalling past experience“he had a good memory when he was younger”
4. an electronic memory device“a memory and the CPU form the central part of a computer to which peripherals are attached”
5. the area of cognitive psychology that studies memory processes“he taught a graduate course on learning and memory”