Real Dictionary

spindle in American English
a slender rod or pin used in spinning
of or like a spindle or spindles
to form into a spindle
to grow in a long, slender shape
adjective
intransitive verb: to shoot up, or grow, into a long, slender stalk or stem, as a plant
noun: a rounded rod, usually of wood, tapering toward each end, used in hand-spinning to twist into thread the fibers drawn from the mass on the distaff, and on which the thread is wound as it is spun
transitive verb: to give the form of a spindle to

spindle in British English
noun: a rod or stick that has a notch in the top, used to draw out natural fibres for spinning into thread, and a long narrow body around which the thread is wound when spun

spindle in Mechanical Engineering
noun: A spindle is a rod, especially one that rotates and acts as an axle, mandrel, or arbor.