Snare a girl with love (5)
I believe the answer is:
lasso
'snare' is the definition.
(both can mean to catch or trap)
'a girl with love' is the wordplay.
'a girl' becomes 'lass' (lass can informally mean a girl).
'with' means one lot of letters go next to another.
'love' becomes 'o' (love means zero in tennis).
'lass'+'o'='LASSO'
(Other definitions for lasso that I've seen before include "Cowcatcher" , "Cowboy's rope with sliding noose" , "Cattle-catching rope" , "use one for catching cattle" , "Catch (steers) with a rope" .)