Question

what's the meaning of grapevine​

Answer 1

here is your answer hope helpful for you

Answer 2

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The grapevine is a word for gossip. Anything heard on the grapevine was learned by word of mouth. From there, people started talking about "the grapevine" as a source of information, especially gossip. If you heard from a friend of a friend that another friend is getting married, you heard it on the grapevine.