Hesitate on run, and get lost? (3)
I believe the answer is:
err
'get lost?' is the definition.
'hesitate on run' is the wordplay.
'hesitate' becomes 'er'.
'on' means one lot of letters go next to another.
'run' becomes 'r' (cricket abbreviation).
'er'+'r'='ERR'
'and' is the link.
(Other definitions for err that I've seen before include "Stray from the straight and narrow" , "Make a wrong move" , "have an affair?" , "Blunder" , "Leave the straight and narrow" .)