noun (n)

• something that is remembered(noun.cognition)

  Example:
  Search as he would, the memory was lost.
  

  source: wordnet30
• the cognitive processes whereby past experience is remembered(noun.cognition)

  Example:
  He can do it from memory.
  

  Synonym:
  remembering
  

  source: wordnet30
• the power of retaining and recalling past experience(noun.cognition)

  Example:
  He had a good memory when he was younger.
  

  Synonym:
  retention, retentiveness, retentivity
  

  source: wordnet30
• an electronic memory device(noun.artifact)

  Example:
  A memory and the CPU form the central part of a computer to which peripherals are attached.
  

  Synonym:
  computer memory, computer storage, memory board, storage, store
  

  source: wordnet30
• the area of cognitive psychology that studies memory processes(noun.cognition)

  Example:
  He taught a graduate course on learning and memory.
  

  source: wordnet30
• The faculty of the mind by which it retains the knowledge of previous thoughts, impressions, or events.(noun)

  source: webster1913