coccyx

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Definitions from WordNet

Noun coccyx has 1 sense

coccyx, tail bone - the end of the vertebral column in humans and tailless apes
--₁ is a kind of bone, os
--₁ is a part of
pelvis, pelvic girdle, pelvic arch, hip; spinal column, vertebral column, spine, backbone, back, rachis
--₁ has parts: coccygeal vertebra, caudal vertebra

Definitions from the Web

Coccyx

Noun - Anatomy: The coccyx is the small triangular bone at the base of the vertebral column, composed of fused vertebrae, typically consisting of three to five vertebrae. It is commonly referred to as the tailbone.

Sample Sentence: The coccyx provides support and stability to the pelvis while sitting.

Noun - Zoology: In some animals, especially birds, the coccyx refers to the terminal, specialized tail feathers or fused vertebrae supporting such feathers.

Sample Sentence: The bird displayed its beautiful plumage by fanning out its coccyx.

Noun - Slang: In slang, coccyx can refer humorously to a person's buttocks or rear end.

Sample Sentence: After falling on the ice, Sarah landed directly on her coccyx, causing considerable pain.

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