Synonyms for Jigsaw (same or very similar meaning)
WordNet sense 1 (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):
saber saw, reciprocating saw
WordNet sense 2 (fine-toothed power saw with a narrow blade; used to cut curved outlines):
fretsaw, scroll saw
From the ODE community, based on WordNet
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