7. (noun)rack, single-foot a rapidgait of a horse in which each foot strikes the ground separately
8. (verb)single-foot, rack go at a rack "the horses single-footed"
9. (verb)rack stretch to the limits
"rack one's brains"
10. (verb)rack put on a rack and pinion "rack a camera"
11. (verb)extort, squeeze, rack, gouge, wring obtain by coercion or intimidation "They extorted money from the executive by threatening to reveal his past to the company boss"; "They squeezed money from the owner of the business by threatening him"