Officer getting memory back with small 2001 computer? (7)
I believe the answer is:
marshal
'officer' is the definition.
(I know that marshal is a type of commissioned military officer)
'memory back with small 2001 computer?' is the wordplay.
'memory' becomes 'ram' (RAM is an example).
'back' says the letters should be written backwards.
'with' means one lot of letters go next to another.
'small' becomes 's' (abbreviation - e.g. clothes size).
'a00r computer?' becomes 'HAL' (HAL 9000 is a computer in a00r: A Space Odyssey).
'ram' in reverse letter order is 'mar'.
'mar'+'s'+'hal'='MARSHAL'
'getting' acts as a link.
(Other definitions for marshal that I've seen before include "Muster" , "Shepherd" , "first officer" , "Sports event official" , "High-ranking officer" .)