Source : Webster's Revised Unabridged Dictionary (1913)

Spire \Spire\, n. [L. spira coil, twist; akin to Gr. ???: cf. F.
   spire.]
   1. A spiral; a curl; a whorl; a twist. --Dryden.

   2. (Geom.) The part of a spiral generated in one revolution
      of the straight line about the pole. See {Spiral}, n.

   {Spire bearer}. (Paleon.) Same as {Spirifer}.