noun A gap or opening made by breaking or battering, as in a wall, fortification or levee / embankment; the space between the parts of a solid body rent by violence.
noun The act of breaking, in a figurative sense.
noun A breaking or infraction of a law, or of any obligation or tie; violation; non-fulfillment.
breach of promise
noun A breaking up of amicable relations, a falling out.
noun A difference in opinions, social class, etc.
noun A breaking of waters, as over a vessel or a coastal defence; the waters themselves.
A clear breach is when the waves roll over the vessel without breaking. A clean breach is when everything on deck is swept away.