Where does “double-decker” come from?

double-decker (English) comes from English deck, from Middle English dekke, from Middle Dutch dec, from Middle Dutch decken, from Old Dutch thecken, from Proto-West Germanic þakkjan, from Proto-Germanic þakjaną, from Proto-Germanic þaką — to cover; pole, stick, beam.

double-decker (English): A vehicle (usually a bus, coach or train) or aircraft with two floors

Definitions

  1. A vehicle (usually a bus, coach or train) or aircraft with two floors

Ancestry of “double-decker”, step by step

double-decker traces back through two separate lines of ancestry.

via English deck

StepLanguageWordMeaning
1EnglishdeckAny raised flat surface that can be walked on: a...
2Middle Englishdekke
3Middle Dutchdecroof, covering
4Middle Dutchdeckento roof, to build/repair a roof; to cover; to...
5Old Dutchtheckento cover; to roof
6Proto-West Germanicþakkjanto cover; to burn
7Proto-Germanicþakjanąto cover; to burn
8Proto-Germanicþakąroof, cover
9Proto-Indo-European(s)teg-to cover; pole, stick, beam

via English doublé

StepLanguageWordMeaning
1EnglishdoubléA compound attack that deceives the opponent's...
2Frenchdoublédouble, brace, pair; double; doublé
3Middle Frenchdouble
4Old Frenchdobledouble
5Latindūplusdouble (twice as much, or as big)
6Proto-Italic*duplosdouble
Every word from Proto-Indo-European (s)teg-
double-decker — Etymology, Origin & Word History | Etymology Explorer