Definitions of break
if you break (your) engagement to someone then you cancel your plans to that person after those plans have become official
I'm not sure whether or not my decision to break off the engagement was the right one.
if you break a contract or a promise then you do not do what you have agreed to do. NB The term breach a contract is preferred to break a contract.
The Company may not have an adequate remedy at law if you break or threaten to break your promise.
if you break the law then you do not act as you are supposed to according the law, especially the criminal law
More than 130 drivers in an area of Nottingham have been caught breaking the law in a clampdown by police.