Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun washboard

2 senses of washboard

Sense 1
washboard -- (device consisting of a corrugated surface to scrub clothes on)
       => device -- (an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water")

Sense 2
washboard, splashboard -- (protective covering consisting of a broad plank along a gunwale to keep water from splashing over the side)
       => protective covering, protective cover, protection -- (a covering that is intend to protect from damage or injury; "they had no protection from the fallout"; "wax provided protection for the floors")