Cutting Tool With Narrow Serrated Blade

This page is the CodyCross answer for the clue below from All Things Water, Group 1289, Puzzle 4 (Tributaries).

Question is: Cutting Tool With Narrow Serrated Blade

and the answer is: FRETSAW

Word Meaning:

FRETSAW — A saw consisting of a metal frame having a fine-toothed narrow blade held under tension, used in making curved cuts.

Definitions from Wiktionary.