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tail bone

tail bone

3.6
The small bone at the very end of the spine
  • noun
  • /teɪl boʊn/
  • Specialized
translation icon : cóccix
  • Does it hurt down by your tail bone, or is it up higher?

Examples

  • Hey man, you broke my tail bone!

  • -I think I broke my tail-bone.

  • His tail bone.

  • The item is highly efficient and energy-savvy, thanks to its complex structure that includes a skull, spine, ribs, legs, and tail bones.

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  • When he fell off his bike, he landed hard and hurt his tail bone.

  • After sitting for a long time on the hard bench, I felt pain in my tail bone.

  • During the yoga class, she was careful to protect her tail bone while practicing the poses.

Synonyms

coccyx
vstail bone
  • Specialized
7 8.9

A small triangular bone at the base of the spine called the tailbone

is the everyday two-word name used for the same bone
tailbone
vstail bone
7 3.1

A small bone at the base of the spine that you sit on

is written as two separate words while keeping the same meaning

Surface Forms

tail bone singular
tail bones plural

Morphology

tail + bone

The compound 'tail bone' is directly compositional: it denotes the bone at the rear/tail area, which a learner can infer from 'tail' (rear appendage) + 'bone' (skeletal tissue). Although the clinical term 'coccyx' might be new, the everyday descriptive phrase follows a transparent, cross-linguistically common naming pattern, so a B1 learner who knows the constituents will understand it.

Etymology

Tail bone is named after an animal's tail and the word bone; it is the small bone at the very end of the spine, where a tail would be. So the name helps you remember it refers to the 'coccyx', the tiny bone that often gets sore when you sit on hard seats.