The Collaborative International Dictionary of English v.0.48:
Spire \Spire\, n. [L. spira coil, twist; akin to Gr. ???: cf. F. spire.] 1. A spiral; a curl; a whorl; a twist. --Dryden. [1913 Webster] 2. (Geom.) The part of a spiral generated in one revolution of the straight line about the pole. See Spiral, n. [1913 Webster] Spire bearer. (Paleon.) Same as Spirifer. [1913 Webster]