2. (Mech.)
Defn: A bar with teeth on its face, or edge, to work with those of a wheel, pinion, or worm, which is to drive it or be driven by it.
3. That which is extorted; exaction. [Obs.] Sir E. Sandys. Mangle rack. (Mach.) See under Mangle. n. — Rack block. (Naut.) See def. 1 (f), above. — Rack lashing, a lashing or binding where the rope is tightened, and held tight by the use of a small stick of wood twisted around. — Rack rail (Railroads), a toothed rack, laid as a rail, to afford a hold for teeth on the driving wheel of locomotive for climbing steep gradients, as in ascending a mountain. — Rack saw, a saw having wide teeth. — Rack stick, the stick used in a rack lashing. — To be on the rack, to suffer torture, physical or mental. — To live at rack and manger, to live on the best at another's expense. [Colloq.] — To put to the rack, to subject to torture; to torment. A fit of the stone puts a kingto the rack, and makes him as miserable as it does the meanest subject. Sir W. Temple.
RACK
Rack, v. t.
1. To extend by the application of force; to stretch or strain; specifically, to stretch on the rack or wheel; to torture by an engine which strains the limbs and pulls the joints. He was racked and miserably tormented. Pope.
2. To torment; to torture; to affect with extreme pain or anguish. Vaunting aloud but racked with deep despair. Milton.
3. To stretch or strain, in a figurative sense; hence, to harass, or oppress by extortion. The landlords there shamefully rack their tenants. Spenser. They [landlords] rack a Scripture simile beyond the true intent thereof. Fuller. Try what my credit can in Venice do; That shall be racked even to the uttermost. Shak.
4. (Mining)
Defn: To wash on a rack, as metals or ore.
5. (Naut.)