SPLASHBOARD

splashboard, splasher, dashboard

(noun) protective covering consisting of a panel to protect people from the splashing water or mud etc.

washboard, splashboard

(noun) protective covering consisting of a broad plank along a gunwale to keep water from splashing over the side

Source: WordNet® 3.1

Etymology

Noun

splashboard (plural splashboards)

A guard towards the front of a vehicle, to prevent splashing by mud or water from the road.

Source: Wiktionary

Splash"board`, n.

Definition: A guard in the front part of vehicle, to prevent splashing by a mud or water from the horse's heels; -- in the United States commonly called dashboard.

Source: Webster’s Unabridged Dictionary 1913 Edition