breach

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.

"Once more unto the breach, dear friends, once more; Or close the wall up with our English dead."

Services between Glasgow Queen Street and Edinburgh Waverley via Falkirk High are currently suspended, following a 30-metre breach of the Union Canal that occurred on August 12 after torrential rain and thunderstorms. The thousands of gallons of water that cascaded onto the railway line below washed away track, ballast and overhead line equipment, and undermined embankments along a 300-metre section of Scotland's busiest rail link.

The act of breaking, in a figurative sense.

But were the poet to make a total difression from his subject, and introduce a new actor, nowise connected with the personages, the imagination, feeling a breach in transition, would enter coldly into the new scene;

A breaking or infraction of a law, or of any obligation or tie; violation; non-fulfillment.

breach of promise

A breaking up of amicable relations, a falling out.

There's fallen between him and my lord / An unkind breach.

A difference in opinions, social class, etc.

For London to have its own exclusive immigration policy would exacerbate the sense that immigration benefits only certain groups and disadvantages the rest. It would entrench the gap between London and the rest of the nation. And it would widen the breach between the public and the elite that has helped fuel anti-immigrant hostility.

To make a breach in.

They breached the outer wall, but not the main one.

To violate or break.

breach an agreement

breach an accord

To break into a ship or into a coastal defence.

On this occasion, the damage was far more serious. The sea wall was breached completely for a distance of over 50 yd., and the gap had to be bridged by a temporary timber viaduct.

To suffer a breach.

Picard: We don't have time for this! The Pasteur’s core is going to breach!

To leap out of the water.

The fearless whale-fishermen now found themselves in the midst of the monsters; ... some ... came jumping into the light of day, head uppermost, exhibiting their entire bodies in the sun, and falling on their sides into the water with the weight of a hundred tons, and thus "breaching" with a crash that the thunder of a park of artillery could scarcely equal.

But one of its most surprising feats, as has been mentioned of the genera already described, is leaping completely out of the water, or 'breaching,' as it is called. ... it seldom breaches more than twice or thrice at a time, and in quick succession.

A particular security exploit against HTTPS when using HTTP compression, based on the CRIME exploit.