|1.||a device around which magnetic tape, film, cotton, etc, can be automatically wound, with plates at top and bottom to prevent it from slipping off|
|2.||anything round which other materials, esp thread, are wound|
|[C14: of Germanic origin; compare Old High German spuolo, Middle Dutch spoele]|
|spool (spl) Pronunciation Key
To store data that is sent to a device, such as a printer, in a buffer that the device reads. This procedure allows the program that sent the data to the device to resume its normal operation without waiting for the device to process the data.
simultaneous peripheral operation online