Something that can be compared to a jigsaw puzzle.
A power saw with fine teeth and a narrow blade which can cut curves in wood or metal.
A jigsaw puzzle.
To cut something using a jigsaw.
An enigmatic, inscrutable, or mysterious person or thing; an enigma, a riddle.
The punctuation mark "?", used at the end of a sentence to indicate a question.
A state of doubt or uncertainty.
Polygonia interrogationis, a North American nymphalid butterfly with a silver mark on the underside of its hindwing resembling a question mark (sense 1).