A reel; a device around which thread, wire or cable is wound, especially a cylinder or spindle.
"We rented a private spool at the resort to relax in the warm jets after our long hike."
A small swimming pool that can be used also as a spa.
transfer data intended for a peripheral device (usually a printer) into temporary storage
"Before you can print the large report, I need to let it spool in the background so the job queue doesn't freeze while the document generates."
wind onto a spool or a reel
"She carefully spooled the new fishing line onto her reel before heading out to the lake."
To wind on a spool or spools.
"The operator carefully fed the new cable onto the machine's large spools to prepare for the next shift."