triple–decker

triple–decker /ˌtrÉŖpəlˈdɛkɚ/ noun
plural triple–deckers
triple–decker
/ˌtrÉŖpəlˈdɛkɚ/
noun
plural triple–deckers
Britannica Dictionary definition of TRIPLE–DECKER
[count]
: something that has three levels or layers — usually used before another noun
— compare double-decker, single-decker