Affirmative action (3)
I believe the answer is:
nod
'affirmative action' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for nod that I've seen before include "OK" , "The Land of ... lay east of Eden" , "Gesture of approval with head" , "Show agreement (or sleepiness?)" , "Land of exile" .)