breach in WordNet English dictionary

1. a failure to perform some promised act or obligation
   breach 
   
2. a personal or social separation (as between opposing factions)
   "they hoped to avoid a break in relations"
   rupture  breach  break  severance  rift  falling out 
   
3. an opening (especially a gap in a dike or fortification)
   breach 
   

1. make an opening or gap in
   gap  breach 
   
2. act in disregard of laws, rules, contracts, or promises
   "offend all laws of humanity"; "violate the basic laws or human civilization"; "break a law"; "break a promise"
   transgress  offend  infract  violate  go against  breach  break