spindle

(noun) (biology) tiny fibers that are seen in cell division; the fibers radiate from two poles and meet at the equator in the middle. Examples: "Chromosomes are distributed by spindles in mitosis and meiosis."

(noun) a piece of wood that has been turned on a lathe; used as a baluster, chair leg, etc..

(noun) any of various rotating shafts that serve as axes for larger rotating parts. Synonyms: mandrel, mandril, arbor.

(noun) a stick or pin used to twist the yarn in spinning.

(noun) any holding device consisting of a rigid, sharp-pointed object. Synonyms: spike. Examples: "The spike pierced the receipts and held them in order."