Definition of the brink
: the edge at the top of a steep cliff —usually used figuratively to refer to a point that is very close to the occurrence of something very bad or (less commonly) very good He nearly lost everything because of his drug addiction, but his friends helped to pull him back from the brink. The two nations are on the brink of war. Doctors may be on the brink of finding a cure for this disease. an animal that has been brought/pulled back from the brink of extinction
Word by Word Definitions
: the edge at the top of a steep place
: a bank especially of a river
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