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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1
noun
Meaning 1
A large triangular bone at the base of the spine, located between the two ilia (wings of the pelvis) and formed from vertebrae that fuse in adulthood.
Definition source: English Wiktionary via Wiktextract
Topics: anatomy, medicine, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: holy bone
Antonyms: none provided
2
noun
Meaning 2
wedge-shaped bone consisting of five fused vertebrae forming the posterior part of the pelvis; its base connects with the lowest lumbar vertebra and its tip with the coccyx
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: bone, os
History
Etymology
From Latin os sacrum (“holy bone”), a calque of Ancient Greek ἱερὸν ὀστέον (hieròn ostéon). Apparently so called either because the sacrum was the part of the animal offered in sacrifice or because of a putative belief that it is where a person's soul resides. A third explanation is that the term is a translation of Ancient Greek ἱερόν (hierón), which has two meanings: “holy, sacred”, and “big” — big being a more appropriate description of the sacrum — but compare.
Across languages
Translations
51 source translations are retained for this English entry.
Arabic:
عَجُزِ
(ʕajuzi)
— bone at the base of the spine
Armenian:
սրբոսկր
(srboskr)
— bone at the base of the spine
Bashkir:
һигеҙгүҙ
(higeźgüź)
— bone at the base of the spine
Bulgarian:
кръст
(krǎst)
— bone at the base of the spine
Bulgarian:
кръстна кост
(krǎstna kost)
— bone at the base of the spine
Catalan:
sacre
— bone at the base of the spine
Cebuano:
kugongkugong
— bone at the base of the spine
Chinese Mandarin:
骶骨
(dǐgǔ)
— bone at the base of the spine
Czech:
kost křížová
— bone at the base of the spine
Czech:
kříž
— bone at the base of the spine
Dutch:
heiligbeen
— bone at the base of the spine
Finnish:
ristiluu
— bone at the base of the spine
French:
sacrum
— bone at the base of the spine
German:
Kreuzbein
— bone at the base of the spine
Greek:
ιερό οστό
(ieró ostó)
— bone at the base of the spine
Hebrew:
עצם העָצֶה
— bone at the base of the spine
Hungarian:
keresztcsont
— bone at the base of the spine
Icelandic:
spjaldbein
— bone at the base of the spine
Icelandic:
spjaldliðir
— bone at the base of the spine
Icelandic:
spjaldhryggur
— bone at the base of the spine
Ingrian:
ristipiiluu
— bone at the base of the spine
Irish:
sacram
— bone at the base of the spine
Italian:
osso sacro
— bone at the base of the spine
Japanese:
仙骨
(senkotsu)
— bone at the base of the spine
Japanese:
薦骨
(senkotsu)
— bone at the base of the spine
Korean:
엉치뼈
(eongchippyeo)
— bone at the base of the spine
Korean:
천골
(cheon'gol)
— bone at the base of the spine
Northern Kurdish:
sêbende
— bone at the base of the spine
Māori:
poroiwi
— bone at the base of the spine
Māori:
tikitona
— bone at the base of the spine
Māori:
tiraki
— bone at the base of the spine
Māori:
tiki
— bone at the base of the spine
Mongolian:
ууц
(uuc)
— bone at the base of the spine
Mongolian:
ууцан яс
(uucan jas)
— bone at the base of the spine
Mongolian:
туух нуруу
(tuux nuruu)
— bone at the base of the spine
Persian:
استخوان خاجی
— bone at the base of the spine
Polish:
krzyż
— bone at the base of the spine
Polish:
kość krzyżowa
— bone at the base of the spine
Portuguese:
sacro
— bone at the base of the spine
Russian:
кресте́ц
(krestéc)
— bone at the base of the spine
Serbo-Croatian:
krstača
— bone at the base of the spine
Spanish:
sacro
— bone at the base of the spine
Spanish:
hueso sacro
— bone at the base of the spine
Swedish:
korsben
— bone at the base of the spine
Tagalog:
kuyukot
— bone at the base of the spine
Telugu:
త్రికము
(trikamu)
— bone at the base of the spine
Turkish:
sakrum
— bone at the base of the spine
Ukrainian:
крижі
(kryži)
— bone at the base of the spine
Vietnamese:
xương mông
— bone at the base of the spine
Welsh:
sacrwm
— bone at the base of the spine
Welsh:
asgwrn y cwman
— bone at the base of the spine