washboard Meaning, Definition & Usage

  1. noun device consisting of a corrugated surface to scrub clothes on
  2. noun protective covering consisting of a broad plank along a gunwale to keep water from splashing over the side
    splashboard.

WordNet

Wash"board` noun
Definitions
  1. A fluted, or ribbed, board on which clothes are rubbed in washing them.
  2. A board running round, and serving as a facing for, the walls of a room, next to the floor; a mopboard.
  3. (Naut.) A broad, thin plank, fixed along the gunwale of boat to keep the sea from breaking inboard; also, a plank on the sill of a lower deck port, for the same purpose; -- called also wasteboard. Mar. Dit.

Webster 1913