Picture to be reassembled (6,6)
I believe the answer is:
jigsaw puzzle
(Other definitions for jigsaw puzzle that I've seen before include "Amusement that involves interlocking pieces" , "Cut-up image to be reassembled" , "It's a challenge to reassemble" , "Wise jazz plug (anag) - you can piece it together!" , "Picture cut into interlocking pieces for reassembly" .)