Antrum and Keyhole

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Antrum noun - A natural cavity or hollow in a bone.

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Keyhole and antrum are semantically related. In some cases you can use "Keyhole" instead a noun "Antrum".

Keyhole noun - The hole where a key is inserted.

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Antrum and keyhole are semantically related. Sometimes you can use "Antrum" instead a noun "Keyhole".

Cite this Source

Keyhole and Antrum. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/antrum/keyhole

Antrum & Keyhole. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/antrum/keyhole>.

Keyhole or Antrum. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/antrum/keyhole.

Google Ngram Viewer shows how "antrum" and "keyhole" have occurred on timeline