backsplash

[bak-splash]

noun

paneling, as that attached to the back of a stovetop or to the wall behind a kitchen countertop, to protect against splashed liquids.

Origin of backsplash

An Americanism dating back to 1950–55; back1 + splash
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019