One of the mysteries of the English language finally explained.
A spool on a fishing reel which may be disengaged from the rest of the reel mechanism, enabling it to spin freely; the setting on the reel which allows the spool to do this; the action of spinning freely in this way.
Early 20th century; earliest use found in Town & Country. From free + spool.
free spool/ˌfriː ˈspuːl/
In this article we explore how to impress employers with a spot-on CV.