( mining ) To wash (metals, ore, etc.) on a rack.
A cranequin, a mechanism including a rack, pinion and pawl, providing both mechanical advantage and a ratchet, used to bend and cock a crossbow.( mechanical engineering ) 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.( mechanical engineering ) 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.( nautical, by extension, slang, uncountable ) Sleep.( nautical ) A piece or frame of wood, having several sheaves, through which the running rigging passes.( historical ) A device, incorporating a ratchet, used to torture victims by stretching them beyond their natural limits.Any of various kinds of frame for holding luggage or other objects on a vehicle or vessel.
A series of one or more shelves, stacked one above the other.From Middle English rakke, rekke, from Middle Dutch rac, recke, rec ( Dutch rek), see rekken.