Attempt to score in rugby (3)
I believe the answer is:
try
This clue is a double definition.
'attempt to' is the first definition.
(I've seen this in other clues)
'score in rugby' is the second definition.
(Other definitions for try that I've seen before include "Judge" , "Gorse" , "Make an effort to get rugby score" , "Attempt a score" , "Hear court case" .)