plural double-deckers
: something that has two levels or layers
The bus we rode on was a double-decker.
—usually used before another nounWe took a tour of London on a double-decker bus.
double-decker trains
a double-decker sandwich
Cite this Entry
“Double-decker.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/double-decker. Accessed 22 Jun. 2026.
Copy Citation
