How to sign: an instrumentality invented for a particular purpose
"the device is small enough to wear on your wrist"; "a device intended to conserve water";
Categories: instrumentality, instrumentation
Within this category: acoustic device, adapter, afterburner, agglomerator, airfoil, alarm, appliance, applicator, aspergill, autopilot, bait, billiard marker, blower, bootjack, breathalyzer, breathing device, bubbler, buffer, catapult, charger, comb, comforter, conductor, contraceptive, converter, corer, corrective, crusher, cryptograph, cutoff, dampener, damper, data input device, deflector, dental appliance, depressor, detector, diestock, drive, drop forge, elastic device, electrical device, electronic device, energizer, exercise device, explosive device, fan, filter, fire extinguisher, flare, gas fixture, groover, guard, heater, heat exchanger, holding device, hydrofoil, imprint, indicator, instrument, interrupter, key, keyboard, Kinetoscope, knocker, lift, lifting device, lighter, machine, magnet, mechanism, memory device, musical instrument, nest egg, noisemaker, optical device, override, paper feed, peeler, pick, power takeoff, prod, prompter, pull, reflector, remote control, reset, restraint, router, runner, scratcher, shoehorn, shoetree, shooting stick, shredder, signaling device, snowshoe, sounder, source of illumination, stabilizer, stemmer, stencil, straightener, strengthener, stylus, support, sweatbox, synchroflash, take-up, teaser, throwing stick, tilter, tongs, trap, trigger, valve, ventilator, washboard, water cooler