How many letters does the top answer for “fine-toothed power saw with a narrow blade; used to cut curved outlines” have?

The most common answer is fretsaw (7 letters).

Crossword clue: fine-toothed power saw with a narrow blade; used to cut curved outlines

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

fretsaw 7 letters wn-def

fine-toothed power saw with a narrow blade; used to cut curved outlines

jigsaw 6 letters wn-def

fine-toothed power saw with a narrow blade; used to cut curved outlines