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tailbone

[teyl-bohn]
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noun Anatomy.
  1. the coccyx.
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Origin of tailbone

First recorded in 1540–50; tail1 + bone
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

tailbone in Medicine

tailbone

(tālbōn′)
n.
  1. coccyx

tailbone in Science

tailbone

[tālbōn′]
  1. See coccyx.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.