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spire1 (spīr)

[Middle English, from Old English spīr.]

noun 

  1. A top part or point that tapers upward; a pinnacle.
  2. A structure or formation, such as a steeple, that tapers to a point at the top.
  3. A slender, tapering part, such as a newly sprouting blade of grass.

verb: spired, spir·ing, spires. 

transitive verb 

To furnish with a spire.

intransitive verb 

To rise and taper steeply.
spire2 (spīr)

[Latin spīra, coil, from Greek speira.]

noun 

    1. A spiral.
    2. A single turn of a spiral; a whorl.
  2. The area farthest from the aperture and nearest the apex on a coiled gastropod shell.