Steal back trucks, packing to be announced (8)
I believe the answer is:
abstract
'steal' is the definition.
(I've seen this before)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for abstract that I've seen before include "Academic" , "a work of modern art" , "Intangible" , "Extract; summary" , "sculpture by Hepworth" .)