Encourage hen to lay? (3,2)
I believe the answer is:
egg on
'encourage' is the definition.
(to egg somebody on is to encourage them)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for egg on that I've seen before include "Soldier may have this" , "this face is obvious embarrassment" , "Urge (someone) to take risks" , "One cooking breakfast might have this" , "Urge, impel" .)