Толковый словарь английского языка - spool

I. noun Etymology: Middle English spole, from Middle Dutch spoele; akin to Old High German spuola ~ Date: 14th century a cylindrical device which has a rim or ridge at each end and an axial hole for a pin or spindle and on which material (as thread, wire, or tape) is wound, material or the amount of material wound on a ~, II. verb Date: 1603 transitive verb to wind on a ~, wind , to regulate the transmission of by means of a ~er , intransitive verb to wind itself on a ~, to be wound or unwound, to regulate data flow by means of a ~er