A usually large jigsaw puzzle that does not fit into a frame, meant, instead, to be assembled on a surface such as a floor.

plural of floor puzzle

(India) Alternative form of jigsaw puzzle

Informal form of crossword puzzle.

A large coniferous tree, Araucaria araucana, native to Chile.

plural of zigsaw puzzle

plural of puzzle box

A box that cannot be opened by the usual obvious means, and therefore challenges a person to find the correct way to open it.

plural of burr puzzle

An interlocking puzzle consisting of notched sticks to be assembled into a three-dimensional structure.