A usually power-driven saw with a narrow straight blade, always reduce razor-sharp curves.
A saw with good teeth and a narrow blade which could reduce curves in metal or wood.
A jigsaw puzzle.
fine-toothed power saw with a narrow blade; always reduce curved outlines
a portable power-saw with a reciprocating knife; can be used with many different blades according to the application and types of cut; generally have actually a plate that rides at first glance which being cut