noun
windowless wall; blank wall
A wall with no windows or openings. The term 盲 (めくら, 'blind') is now considered sensitive and may be avoided in favor of expressions like 窓のない壁. Use with caution.
その建物の裏側は盲壁で、窓が一つもなかった。
The back of the building was a windowless wall, with not a single window.