Urge back into the lead, which does amaze one (7)
I believe the answer is:
stagger
'urge back into the lead which does amaze one' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'urge back into the lead' is the wordplay.
'urge' becomes 'egg' (as in egging someone on).
'back' shows that the letters should be reversed in order.
'into' is an insertion indicator.
'the lead' becomes 'star' ('star' can be a synonym of 'lead').
'egg' backwards is 'gge'.
'gge' going inside 'star' is 'STAGGER'.
Can you help me to learn more?
(Other definitions for stagger that I've seen before include "Reel; amaze" , "bowl over" , "Surprise" , "Teeter" , "Totter" .)