Definition of "washboard" []

• A board having a corrugated surface on which clothes can be rubbed in the process of laundering. (noun)
• Music A similar board used as a percussion instrument. (noun)
• A board fastened to a wall at the floor; a baseboard. (noun)
• Nautical A thin plank fastened to the side of a boat or to the sill of a port to keep out the sea and the spray. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Even a washboard is not a very likely find other than in an antique shop."
• "As the researchers put it on the experiment’s website, The fact that our simplified systems produce washboard ripples is important since it shows that neither tyres nor suspension are necessary to obtain washboard roads, although of course, adding a spring, a dashpot, a tyre or an engine would affect the size of the bumps."
• "It was the only year with the chrome spheres on the trunk as shown in the picture along with that year two tone coves on the sides and a "washboard" fake air intake looking but nice hood."