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ENGLISH · A WORD WITH POSSIBILITIES

rex.

A king, particularly in ancient Rome.

3 characters1 syllables approx.English language

Meaning & usage

noun/ˈɹɛks/
  1. A king, particularly in ancient Rome.

  2. An animal which has a genetic recessive variation that causes the guard hairs to be very short or fully lacking.

Where this word comes from

From Latin rēx (“king”). Doublet of rajah and roy. Noun sense 2 originally referred to rabbits of the Belgian "castorrex" breed, so named because their fur was similar to that of beavers, and entered English around 1920.

verb/ˈɹɛks/
  1. To breed (an animal) to have this kind of hair.

    transitive
Where this word comes from

From Latin rēx (“king”). Doublet of rajah and roy. Noun sense 2 originally referred to rabbits of the Belgian "castorrex" breed, so named because their fur was similar to that of beavers, and entered English around 1920.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.