Type of puzzle (6)
'type of puzzle' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for jigsaw that I've seen before include "Puzzle fittingly completed" , "Puzzle in which pieces must be reassembled" , "Puzzle-maker" , "Puzzle - powered cutter" , "As pastime" .)
(Other definitions for word square that I've seen before include "Puzzle where the same letters read across as read down" , "puzzle that might be to your taste" , "Puzzle with solutions reading the same down as across" .)