noun (n)

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

  Synonym:
  washboard
  

  source: wordnet30
• protective covering consisting of a panel to protect people from the splashing water or mud etc.(noun.artifact)

  Synonym:
  dashboard, splasher
  

  source: wordnet30
• 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.(noun)

  source: webster1913