Backsplash
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A panel behind a sink or cooker that protects the wall from splashes; a splashback.
Backsplash meaning & definition 1 of Backsplash.
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an area of hard material covering part of a wall, for example in a kitchen, so that the wall is protected and easy to clean if liquid falls onto it:
Backsplash meaning & definition 2 of Backsplash.