Golf score of two under par (5)
I believe the answer is:
eagle
'golf score of two under par' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for eagle that I've seen before include "ten-dollar coin" , "It may soar" , "A glee-ful bird?" , "Keen-sighted bird of prey" , "Former US coin" .)