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Douglas Harper's Etymology Dictionary
rip-saw

"a hand saw, the teeth of which have more rake and less set than a cross-cut saw, used for cutting wood in the direction of the grain," 1846, from rip (n.) "split timber" (see rip (v.) + saw (n.1)).

Usage examples of "rip-saw".

One was a rip-saw, for cutting with the grain of the wood, the other a crosscut saw, but Martie didn’t know which was which.