The definition of brink is the edge of something steep, or the point right before something unpleasant is about to happen.(noun)
When a disaster is about to occur, this is an example of a time when you are on the brink of disaster.
See brink in Webster's New World College Dictionary
Origin: ME < MLowG or Dan, shore, bank, grassy edge; prob. < IE *bhreng-, var. of base *bhren-, project, edge > L frons, front
See brink in American Heritage Dictionary 4
Origin: Middle English
Origin: , probably of Scandinavian origin.
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