New critic losing head gets push (5)

I believe the answer is:
nudge
'push' is the definition.
(I know that nudge is a type of push)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for nudge that I've seen before include "Push gently" , "Gentle poke with elbow" , "Gentle prod" , "Light touch or push" , "Jogger" .)