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 they can define each other.
'urge back into the lead' is the wordplay.
'urge' becomes 'egg' (as in egging someone on).
'back' says the letters should be written in reverse.
'into' is an insertion indicator.
'the lead' becomes 'star' ('star' can be a synonym of 'lead').
'egg' back-to-front is 'gge'.
'gge' placed into '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" .)