bitch hook
n.β Β«When I get 15 to 20 people on the bob-sled, it really tends to push them downhill. I did hear about a chain you throw under the runners (with a bitch hook?).Β» ββBob-sled brakes” by Ted Rural HeritageβFront Porch Dec. 28, 2004. (source: Double-Tongued Dictionary)