brink (n.)youdaoicibaDictYouDict[brink 词源字典]
early 13c., from Middle Low German brink "edge," or Danish brink "steepness, shore, bank, grassy edge," from Proto-Germanic *brenkon, probably from PIE *bhreng-, variant of root *bhren- "project, edge" (cognates: Lithuanian brinkti "to swell").[brink etymology, brink origin, 英语词源]