splashback
From Longman Dictionary of Contemporary EnglishRelated topics: Housesplashbacksplash‧back /ˈsplæʃbæk/ noun [countable] British English DHHthe area of a bathroom or kitchen wall that is behind the taps and covered in tilesExamples from the Corpussplashback• Re-tile the splashback between counter top and wall-hung cupboards.• The sink was squared-off and old fashioned, with a white splashback and a tilting mirror.