(noun)
a slender spike or tapered rod, usually part of a spinning wheel, used for spinning, twisting, and winding yarn or thread;
e.g. In the fairy tale, the princess was pricked by a spindle, which caused her to fall into a deep sleep.
(noun)
(American) a device that consists of long, pointed metal rod attached vertically to a flat base, used for sticking papers as a mode of temporarily filing them;
e.g. He stuck the receipts on the spindle so that he wouldn't lose them.
(noun)
broadly, a rod or similar structure, typically serving as an axis/axle around which something revolves in a mechanism or which itself revolves;
e.g. The disk spun around the spindle that held it in place.
(noun)
(biology) a network/mass of specialized fibers in a cell to which chromosomes become attached during cell division;
e.g. During this stage of the process, the spindle contracts, pulling the chromosome apart.
(verb)
to impale and place a piece of paper on a specialized device (a spindle) in order to temporarily file it;
e.g. She began to spindle the forms in the order they had been submitted.