Getaway (6)
I believe the answer is:
escape
'getaway' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for escape that I've seen before include "it was great for Steve McQueen!" , "Abscond, flee" , "Elude; leakage" , "Get free from captivity" , "'Break free, get away (6)'" .)