"2001” computer (3)
I believe the answer is:
hal
'2001 computer' is the definition.
(HAL 9000 is a computer in 2001: A Space Odyssey)
This is all the clue.
(Other definitions for hal that I've seen before include "royal prince" , "Shakespeare's Prince_with Falstaff" , "Prince -, Falstaff's companion (Henry IV, Pt I)" , "Falstaff's prince (H.IV)" , "Odyssean character" .)