barb, spearhead

winze, ventilation shaft, stope, flange, mineshaft, trench, hosel, tramming, reamer, idler pulley, bushing, cavity, conveyor, baseplate, countersink, chamfering, platens, mandrel, manway, mine, intake valve, collet, adit, rockface, pulley, rotor, elevator shaft, piston rod, nosepiece, tappet, impeller, auger, valve, winch, coiler, keyways, diaphragm, penstock, clubhead, pushrod, duct, hole, borehole, nozzle, falsework, stator, tunnel, nailer, piton, cavern, sheave, girder, exhaust valve, joist, inlet manifold, hatchway, solenoid, torsion bar, workpiece, pushrods, soleplate, windings, lamella, pipe, rotary actuator, tubing, coal seam, rearwards, plumb bob, coupler, propeller shaft, trunnion, crankshaft, housings, casing, piston, downpipe, pintle, jamb, venturi, crevice, pipework, torque wrench, sump, crossbeam, truss, swarf, coil, manhole, formwork, spile, cermet, floor joist, ductwork, hydraulic ram, rotor shaft, radiator, slope, windlass, dragline, underground, combustion chamber, shafts, axle, rod, dowel, spindle, cylinder, pin, slab, bolt, handle, stem, crossbar, hoop, plank, shank, spokes, struts, bar, barrel, crank, gear, turbine, propeller, lubricated, compressor, duty, hydraulic, speed, vane, inboard, lowspeed, outboard

air shaft, air well, arbor, assagai, assegai, axle, camshaft, crankshaft, driveshaft, javelin, laser beam, mandrel, mandril, moonbeam, moonray, spindle, sunbeam, sunray, thill, transmission shaft, trident, well

., aftershaft, air shaft, air well, arrow, axle, barb, bottlebrush, brake band, calamus, connecting rod, crank, crankshaft, downcast, driveshaft, dynamic balance, echinus, elevator, elevator shaft, entasis, fishgig, fizgig, flute, fluting, funnel, gig, harpoon, heel, hub, idler pulley, idle pulley, idle wheel, lance, lift, long iron, machine bolt, packing box, pin, pivot, poler, pole horse, quill, setscrew, short iron, spear, starter, stuffing box, toe, transmission shaft, tuscan order, upcast, vane, ventilation shaft, web, well, wheel, wheel and axle, whip, wood, worm gear, yawning

arrow, building, column, edifice, feather, mine, pillar, plumage, plume, pointer, rotating mechanism

arm, beat, beat out, comment, crush, light, line, long bone, member, os longum, passage, passageway, penis, phallus, remark, rib, rod, trounce, upright, vanquish, vertical, visible light, visible radiation, weapon, weapon system

barb, beam, beam of light, calamus, cheat, chicane, chouse, diaphysis, dick, dig, gibe, jibe, jockey, lance, light beam, pecker, peter, quill, ray, ray of light, rotating shaft, screw, shaft of light, shot, slam, spear, tool