Peer; match (5)
I believe the answer is:
equal
I believe this is a double definition.
'peer' is the first definition.
(I know that peer can be written as equal)
'match' is the second definition.
(I know that match can be written as equal)
(Other definitions for equal that I've seen before include "Identical, add up to" , "Match, rival" , "more or less" , "Fifty-fifty" , "Keep pace with - peer" .)