kei.
cobble, cobblestone
Meaning & usage
cobble, cobblestone
pebble
boulder
someone who's an expert at something, whiz
Ze is een kei in wiskunde.
Where this word comes from
From Middle Dutch key, keye, from Old Dutch *kei (in toponym keidīk (“Keidijk”)), perhaps from Proto-West Germanic *kagi (compare kegel (“cone”)), from Proto-Germanic *kagiz.
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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.