jigsaw (Noun) — A portable power saw with a reciprocating blade; can be used with a variety of blades depending on the application and kind of cut; generally have a plate that rides on the surface that is being cut.
jigsaw (Noun) — Fine-toothed power saw with a narrow blade; used to cut curved outlines.
jigsaw (Noun) — A puzzle that requires you to reassemble a picture that has been mounted on a stiff base and cut into interlocking pieces.
jigsaw (Verb) — Cut with a jigsaw.