Spindle

The term spindle may refer to:

In textiles and manufacturing:
 * Spindle (textiles), a device to spin fibers into thread
 * Spindle (tool), is the main rotating part of a machine tool, woodworking machine, etc.
 * Segmented spindle, a spindle consisting of discrete elements that can be assembled and disassembled on the fly

In computing:
 * Spindle (hard disk drive), the axis or alternate name of a hard disk drive
 * Spindle (disc packaging), a plastic case for bulk optical discs

In biology:
 * Spindle apparatus, a cellular structure organizing and separating the chromosomes during cell division
 * Muscle spindle, a specialized innervated muscle structure involved in the reflex action and in proprioception
 * Spindle neurons are a specific class of neurons that participate in signal transmission in the nervous system
 * Sleep spindle, an EEG waveform that occurs during sleep
 * The genus Euonymus (also called spindles) are deciduous and evergreen shrubs and small trees

Other uses:
 * Spindle (automobile), a part of a car's suspension system
 * Spindle (furniture), an axially symmetric part of furniture or other woodwork
 * Spindle (stationery), a device for holding paper documents
 * Spindle (fire making), a straight wooden rod used in fire making
 * Spindle torus, in mathematics, a self-intersecting torus
 * Spindle (sculpture), a 40-foot sculpture made from cars in Berwyn, Illinois
 * The Spindles, burial towers at Amrit, Syria