- a cylinder or roller, usually with a hole for a spindle from end to end and a rim at either end, upon which thread, wire, etc. is wound
- something like a spool, as a bobbin, reel, etc.
- the material wound on a spool
Origin of spoolMiddle English spole from Middle French espole from Middle Dutch spoele, akin to German spule from Indo-European base an unverified form (s)p(h)el-, to split, split off from source spall, spill, spoil