breach (breaches plural & 3rd person present) (breaching present participle) (breached past tense & past participle )
1 verb If you breach an agreement, a law, or a promise, you break it.
(=violate)
The newspaper breached the code of conduct on privacy... V n
2 n-var A breach of an agreement, a law, or a promise is an act of breaking it.
(=violation)
The congressman was accused of a breach of secrecy rules., ...a $1 billion breach of contract suit.
3 n-count A breach in a relationship is a serious disagreement which often results in the relationship ending.
FORMAL usu N in/between n
(=rift, rupture)
Their actions threatened a serious breach in relations between the two countries., ...the breach between Tito and Stalin.
4 verb If someone or something breaches a barrier, they make an opening in it, usually leaving it weakened or destroyed.
FORMAL
(=rupture)
Fire may have breached the cargo tanks and set the oil ablaze. V n
5 verb If you breach someone's security or their defences, you manage to get through and attack an area that is heavily guarded and protected.
The bomber had breached security by hurling his dynamite from a roof overlooking the building. V n
Breach is also a noun., n-count
...widespread breaches of security at Ministry of Defence bases.
6 If you step into the breach, you do a job or task which someone else was supposed to do or has done in the past, because they are suddenly unable to do it.
♦
step into the breach phrase V inflects
I was persuaded to step into the breach temporarily when they became too ill to continue.