Fail to catch girl (4)
I believe the answer is:
miss
I believe this clue is a double definition.
'fail to catch' is the first definition.
(I've seen this before)
'girl' is the second definition.
('miss' can be a synonym of 'girl')
(Other definitions for miss that I've seen before include "Girl - bad shot" , "Strike noisily; criticise" , "Fail to get" , "Fail to locate" , "Single girl" .)