#1 breach n. a failure to perform some promised act or obligation. wn
#2 breach v. [transgress, offend, infract, violate, go against, break] 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". wn
#3 breach v. [gap] make an opening or gap in. wn
#4 breach n. an opening (especially a gap in a dike or fortification). wn
#5 breach n. [rupture, break, severance, rift, falling out] a personal or social separation (as between opposing factions); "they hoped to avoid a break in relations". wn
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