TRIPLEBACK
Meaning of TRIPLEBACK in English
ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ adjective
: constituting a sofa or settee (as in the Chippendale or Sheraton style) having a back in three parts like chair backs
Webster's New International English Dictionary.
Новый международный словарь английского языка Webster.
2012