What is the meaning of 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. (
  • usage: "chromosomes are distributed by spindles in mitosis and meiosis"
• A piece of wood that has been turned on a lathe; used as a baluster, chair leg, etc..
• Any of various rotating shafts that serve as axes for larger rotating parts.
  • synonyms: mandrel, mandril, arbor
• A stick or pin used to twist the yarn in spinning.
• Any holding device consisting of a rigid, sharp-pointed object.
  • usage: "the spike pierced the receipts and held them in order"
  • synonyms: spike