Eggs on Reg whisked in America (5)
I believe the answer is:
urges
'eggs on' is the definition.
(I've seen this before)
'reg whisked in america' is the wordplay.
I cannot quite understand how this works, but
an anagram of 'reg' is 'rge' which is present in the answer.
'america' could be 'us' (United States) and 'us' is located in the remaining letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for urges that I've seen before include "Persuades to do something" , "Inner promptings" , "Presses to do something" , "Encourages" , "Exhorts or prods" .)