noun · 2 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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General-American:/ˈkɑksɪks/
Received-Pronunciation:/ˈkɒksɪks/
US:Recorded audio is listed in the source snapshot.
1
noun
Meaning 1
The final (bottom-most) fused vertebrae at the base of the spine, the tailbone.
Definition source: English Wiktionary via Wiktextract
Usage: formal
Topics: medicine, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
the end of the vertebral column in humans and tailless apes
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: tail bone
Antonyms: none provided
Broader terms: bone, os
History
Etymology
From Latin coccyx, from Ancient Greek κόκκυξ (kókkux, “cuckoo”), referring to the curved shape of a cuckoo's beak when viewed from the side.
Across languages
Translations
95 source translations are retained for this English entry.
Arabic:
عُصُص
(ʕuṣuṣ)
— (anatomy) final fused vertebrae
Arabic:
عُصْعُص
(ʕuṣʕuṣ)
— (anatomy) final fused vertebrae
Arabic:
عصعص
(ʕúṣʕuṣ)
— (anatomy) final fused vertebrae
Armenian:
պոչուկ
(počʻuk)
— (anatomy) final fused vertebrae
West Coast Bajau:
sengkurung
— (anatomy) final fused vertebrae
Belarusian:
хвастцо́вая косць
(xvastcóvaja koscʹ)
— (anatomy) final fused vertebrae
Belarusian:
хвасце́ц
(xvascjéc)
— (anatomy) final fused vertebrae
Bulgarian:
опашна кост
(opašna kost)
— (anatomy) final fused vertebrae
Catalan:
còccix
— (anatomy) final fused vertebrae
Cebuano:
bangkawbangkaw
— (anatomy) final fused vertebrae
Chinese Mandarin:
尾骨
(wěigǔ)
— (anatomy) final fused vertebrae
Chinese Mandarin:
尾骶骨
(wěidǐgǔ)
— (anatomy) final fused vertebrae
Chinese Mandarin:
尾閭骨 /尾闾骨
(wěilǘgǔ)
— (anatomy) final fused vertebrae
Crimean Tatar:
quyruq kemigi
— (anatomy) final fused vertebrae
Czech:
kostrč
— (anatomy) final fused vertebrae
Old Czech:
kostřec
— (anatomy) final fused vertebrae
Danish:
haleben
— (anatomy) final fused vertebrae
Dutch:
staartbeen
— (anatomy) final fused vertebrae
Dutch:
stuitje
— (anatomy) final fused vertebrae
Esperanto:
kokcigo
— (anatomy) final fused vertebrae
Faroese:
halabein
— (anatomy) final fused vertebrae
Finnish:
häntäluu
— (anatomy) final fused vertebrae
French:
coccyx
— (anatomy) final fused vertebrae
Galician:
cóccix
— (anatomy) final fused vertebrae
German:
Coccyx
— (anatomy) final fused vertebrae
German:
Steißbein
— (anatomy) final fused vertebrae
Greek:
κόκκυξ
(kókkyx)
— (anatomy) final fused vertebrae
Greek:
ουρά
(ourá)
— (anatomy) final fused vertebrae
Ancient Greek:
κόκκυξ
(kókkux)
— (anatomy) final fused vertebrae
Hiligaynon:
pigtot
— (anatomy) final fused vertebrae
Hungarian:
farkcsont
— (anatomy) final fused vertebrae
Hungarian:
farokcsont
— (anatomy) final fused vertebrae
Icelandic:
rófubein
— (anatomy) final fused vertebrae
Ilocano:
kimmol
— (anatomy) final fused vertebrae
Indonesian:
tulang sulbi
— (anatomy) final fused vertebrae
Indonesian:
tulang ekor
— (anatomy) final fused vertebrae
Indonesian:
tulang tongkeng
— (anatomy) final fused vertebrae
Indonesian:
koksiks
— (anatomy) final fused vertebrae
Ingrian:
häntäpiiluu
— (anatomy) final fused vertebrae
Italian:
coccige
— (anatomy) final fused vertebrae
Japanese:
尾骨
(bikotsu)
— (anatomy) final fused vertebrae
Japanese:
尾骶骨
(biteikotsu)
— (anatomy) final fused vertebrae
Japanese:
尾閭骨
(biryokotsu)
— (anatomy) final fused vertebrae
Kapampangan:
kaikut
— (anatomy) final fused vertebrae
Kapampangan:
kayikut
— (anatomy) final fused vertebrae
Kazakh:
құймышақ
(qūimyşaq)
— (anatomy) final fused vertebrae
Korean:
꼬리뼈
(kkorippyeo)
— (anatomy) final fused vertebrae
Northern Kurdish:
hestiyê qilênce
— (anatomy) final fused vertebrae
Lithuanian:
uodegikaulis
— (anatomy) final fused vertebrae
Malay:
tulang sulbi
— (anatomy) final fused vertebrae
Malay:
tulang ekor
— (anatomy) final fused vertebrae
Malay:
tulang cenonot
— (anatomy) final fused vertebrae
Malay:
tulang kongkeng
— (anatomy) final fused vertebrae
Malay:
tulang tongkeng
— (anatomy) final fused vertebrae
Malay:
koksiks
— (anatomy) final fused vertebrae
Māori:
timu
— (anatomy) final fused vertebrae
Central Melanau:
tuleang kelebik
— (anatomy) final fused vertebrae
Central Melanau:
kubin
— (anatomy) final fused vertebrae
Tagal Murut:
kalut
— (anatomy) final fused vertebrae
Khiamniungan Naga:
mūithùonyù
— (anatomy) final fused vertebrae
Navajo:
atseeʼ
— (anatomy) final fused vertebrae
Norwegian Bokmål:
haleben
— (anatomy) final fused vertebrae
Norwegian Bokmål:
halebein
— (anatomy) final fused vertebrae
Norwegian Nynorsk:
halebein
— (anatomy) final fused vertebrae
Persian:
دنبالچه
(donbâlče)
— (anatomy) final fused vertebrae
Polish:
kość guziczna
— (anatomy) final fused vertebrae
Polish:
kość ogonowa
— (anatomy) final fused vertebrae
Portuguese:
cóccix
— (anatomy) final fused vertebrae
Portuguese:
mucumbu
— (anatomy) final fused vertebrae
Portuguese:
curanchim
— (anatomy) final fused vertebrae
Romanian:
noadă
— (anatomy) final fused vertebrae
Russian:
ко́пчик
(kópčik)
— (anatomy) final fused vertebrae
Sabah Bisaya:
saligi'
— (anatomy) final fused vertebrae
Scots:
rumple-bane
— (anatomy) final fused vertebrae
Serbo-Croatian:
trtica
— (anatomy) final fused vertebrae
Serbo-Croatian:
trtičnjača
— (anatomy) final fused vertebrae
Sicilian:
còcciggi
— (anatomy) final fused vertebrae
Slovak:
kostrč
— (anatomy) final fused vertebrae
Slovene:
trtica
— (anatomy) final fused vertebrae
Spanish:
cóccix
— (anatomy) final fused vertebrae
Spanish:
coxis
— (anatomy) final fused vertebrae
Spanish:
rabadilla
— (anatomy) final fused vertebrae
Spanish:
curcusilla
— (anatomy) final fused vertebrae
Spanish:
rafaila
— (anatomy) final fused vertebrae
Swedish:
svanskota
— (anatomy) final fused vertebrae
Tagalog:
puil
— (anatomy) final fused vertebrae
Tagalog:
tulatod
— (anatomy) final fused vertebrae
Lower Tanana:
-chaniɬtsela'
— (anatomy) final fused vertebrae
Thai:
ก้นกบ
(gôn-gòp)
— (anatomy) final fused vertebrae
Turkish:
kuyruk sokumu
— (anatomy) final fused vertebrae
Turkish:
kuyruk kemiği
— (anatomy) final fused vertebrae
