Last three pieces of fresh lamb prepared for butcher's stand (7)
I believe the answer is:
shamble
But I can't explain it at all! Could you help me understand?
(Other definitions for shamble that I've seen before include "not the way to walk up the aisle!" , "Walk shufflingly" , "Shuffling awkward walk" , "Walk slowly and awkwardly" , "Shuffle - butcher's market stall" .)