Crossword Genius

Egg on uniform -- regret scrubbing every other part (4)

Ross

I believe the answer is:

urge

I'm a little stuck... Click here to teach me more about this clue!

'egg on' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for urge that I've seen before include "Itch" , "Implore" , "Constrain" , "Strong impulse, desire" , "Egg on, encourage to proceed" .)

I've seen this clue in The Telegraph.
Want a hint initially instead of a full solution? Install my app