1. (n.) A piece of cane or red with a knot at each end, or a hollow cylinder of wood with a ridge at each end, used to wind thread or yarn upon.

2. (v. t.) To wind on a spool or spools.

balance balance rudder balance wheel ballast centrifuge chuck counterbalance counterweight drill extractor fan fin fixative flywheel governor hairspring impeller jack keel mordant pendulum propeller reel roller rolling pin rotary drill rotor screw shock absorber spindle spinner spit spool springs stabilizator stiffening tail plane teetotum top treadmill turbine turntable whorl windmill