Whipsaw

[Sarah]

A saw for dividing timber lengthwise, usually set in a frame,and worked by two persons; also, a fret saw.

[Sarah]

The act of knocking someone down by running at high speed and going shoulder first into someones lower legs. Usually the victim is struck from behind near the knees. Whipping his legs out from under him. Messing up his world.

[Greta]

A saw with a narrow blade and a handle at both ends, used typically by two people.