memory

Memory is the power of the brain to recall past experiences or information. (noun)

An example of memory is someone remembering the date for their wedding anniversary.

See memory in Webster's New World College Dictionary

noun pl. memories

the power, act, or process of recalling to mind facts previously learned or past experiences
the total of what one remembers
a person, thing, happening, or act remembered
the length of time over which remembering extends: a happening within the memory of living men
commemoration or remembrance: in memory of his father
the fact of being remembered; posthumous reputation
plastic memory
Electronics
1. a device in a computer, guidance system, etc., designed to accept, store, and recall information or instructions; specif., random-access memory
2. storage or storage capacity as of a computer, disk, etc.

See memory in American Heritage Dictionary 4

(mĕmˈə-rē)

noun pl. mem·o·ries

The mental faculty of retaining and recalling past experience.
The act or an instance of remembering; recollection: spent the afternoon lost in memory.
All that a person can remember: It hasn't happened in my memory.
Something remembered: pleasant childhood memories.
The fact of being remembered; remembrance: dedicated to their parents' memory.
The period of time covered by the remembrance or recollection of a person or group of persons: within the memory of humankind.
Biology Persistent modification of behavior resulting from an animal's experience.
Computer Science
a. A unit of a computer that preserves data for retrieval.
b. Capacity for storing information: two gigabytes of memory.
Statistics The set of past events affecting a given event in a stochastic process.
The capacity of a material, such as plastic or metal, to return to a previous shape after deformation.
Immunology The ability of the immune system to respond faster and more powerfully to subsequent exposure to an antigen.