os

Pronunciation: /ɒs/

The English word “os” has 3 meanings listed here.

noun

Synonym of bone.
An opening or entrance to a passage, particularly one at either end of the cervix, internal (to the uterus) or external (to the vagina).
An osar or esker.

Unadapted borrowing from Latin os (“bone”).

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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.