Steal livestock (6)
I believe the answer is:
rustle
'steal livestock' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for rustle that I've seen before include "Steal livestock - make a little noise" , "Steal (cattle, etc)" , "Low sound of rubbing" , "Steal ((eg, cattle)" , "The sound of leaves in the wind" .)