The definition of a cobber is Australian slang for a friend.
(noun)An example of a cobber is someone a person has been close to his whole life.
See cobber in Webster's New World College Dictionary
noun
Origin: prob. < Heb (via Yiddish) chaver, comrade
See cobber in American Heritage Dictionary 4
noun
Origin:
Origin: Possibly from dialectal cob, to take a liking to
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