rack

noun

1. A series of one or more shelves, stacked one above the other.
2. Any of various kinds of frame for holding luggage or other objects on a vehicle or vessel.
3. A device, incorporating a ratchet, used to torture victims by stretching them beyond their natural limits.
4. A piece or frame of wood, having several sheaves, through which the running rigging passes.
5. A bunk.
6. Sleep.
7. A distaff.
8. A bar with teeth on its face or edge, to work with those of a gearwheel, pinion, or worm, which is to drive or be driven by it.
9. A bar with teeth on its face or edge, to work with a pawl as a ratchet allowing movement in one direction only, used for example in a handbrake or crossbow.
10. A cranequin, a mechanism including a rack, pinion and pawl, providing both mechanical advantage and a ratchet, used to bend and cock a crossbow.
11. A set of antlers (as on deer, moose or elk).
12. A cut of meat involving several adjacent ribs.
13. A bone of a horse.
14. A hollow triangle used for aligning the balls at the start of a game.
15. A plastic tray used for holding and moving chips.
16. A woman's breasts.
17. A friction device for abseiling, consisting of a frame with five or more metal bars, around which the rope is threaded.
18. A climber's set of equipment for setting up protection and belays, consisting of runners, slings, carabiners, nuts, Friends, etc.
19. A grate on which bacon is laid.
20. A set with a distributive binary operation whose action on the set is invertible.