Definify.com
Webster 1913 Edition
Breakwater
Break′waˊter
,Noun.
Any structure or contrivance, as a mole, or a wall at the mouth of a harbor, to break the force of waves, and afford protection from their violence.
Webster 1828 Edition
Breakwater
BREAKWATER
,Noun.
1.
A small buoy fastened to a large one, when the rope of the latter is not long enough to reach the surface of the water.2.
A mole, at the mouth of a harbor, intended to break the force of the waves.