Where does “greatcoat” come from?

Greatcoat derives from English great and coat, with great tracing back through Old English grēat and Proto-Germanic grautaz to Frankish kotta, ultimately from Latin cubare meaning "to lie down."

greatcoat (English): A heavy overcoat

Definitions

  1. A heavy overcoat

Ancestry of “greatcoat”, step by step

greatcoat traces back through two separate lines of ancestry.

via English Great

StepLanguageWordMeaning
1EnglishGreatTaking much space; large
2Middle Englishgretegreat; massive; amazing
3Old Englishgrēatgreat, large; big, thick, coarse, massive
4Proto-West Germanicgraut
5Proto-Germanicgrautazcoarse, crude; big, large
6Proto-Indo-Europeanǵʰer-to yearn for; to enclose; bowels, intestines

via English coat

StepLanguageWordMeaning
1EnglishcoatAn outer garment covering the upper torso and...
2Middle EnglishcoteA coat, especially one worn as an undergarment or...
3Old Frenchcotteovershirt, tunic
4Frankishkottacoat

Words derived from “greatcoat

Every word from Proto-Indo-European ǵʰer-
greatcoat — Etymology, Origin & Word History | Etymology Explorer