On move at two by a big city (6)
I believe the answer is:
ottawa
'big city' is the definition.
'ottawa' can be an answer for 'city' (Ottawa is an example). I am unsure of the 'big' bit.
'on move at two by a' is the wordplay.
'on' is a charade indicator (letters next to each other).
'move' is an anagram indicator (I've seen 'moved' mean this).
'by' says to put letters next to each other.
'at'+'two'='attwo'
'attwo' is an anagram of 'ottaw'.
'ottaw' next to 'a' is 'OTTAWA'.
Can you help me to learn more?
(Other definitions for ottawa that I've seen before include "Canadian city" , "somewhere in Canada" , "N. American city" , "Canada's capital" , "The capital of Canada (6)" .)