water-breaker1
/ˈwɔːtəbreɪkə/Now somewhat rare
noun
A barrier against the force of the waves, a breakwater.
Origin
Late 17th century. From water + breaker.
water breaker2
/ˈwɔːtə ˌbreɪkə/Nautical
noun
A keg or cask for holding water.
Origin
Mid 19th century; earliest use found in The Standard. From water + breaker.