noun
high-quality tatami covering from Bingo province
Refers to a traditional tatami facing made from soft rush (igusa) grown in the Bingo region (now eastern Hiroshima Prefecture). A specialized term used in tatami-making and traditional architecture contexts.
この茶室には備後表が使われている。
Bingo-omote tatami covering is used in this tea room.
備後 (Bingo, an old province name) + 表 (omote, the surface layer of tatami). The name indicates the regional origin of the rush used.