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]