Soiled golf skirt on yard (5)
I believe the answer is:
grimy
'soiled' is the definition.
(similar in meaning)
'golf skirt on yard' is the wordplay.
'golf' becomes 'g' (phonetic alphabet: alpha, bravo, charlie etc.).
'skirt' becomes 'rim' (I've seen this in other clues).
'on' is a charade indicator (letters next to each other).
'yard' becomes 'y'.
'g'+'rim'+'y'='GRIMY'
(Other definitions for grimy that I've seen before include "filthy" , "Mucky" , "smutty" , "Dirty - soiled" , "Ingrained with dirt" .)