Collocations for jigsaw - noun

giant, huge
200-piece, etc.

bit, piece
One piece of the jigsaw is still missing.

do
I used to enjoy doing jigsaws.

piece together (figurative)
The police managed to piece together the jigsaw and reconstruct the victim's last hours.

finish

puzzle
piece

a piece in a jigsaw (figurative)
This is another piece in the jigsaw that will help us understand the disease.