名詞 grapevine:

1. gossip spread by spoken communication
   同義詞：pipeline, word of mouth
2. any of numerous woody vines of genus Vitis bearing clusters of edible berries
   同義詞：grape

1. I heard it through the grapevine.
   我是經(jīng)謠傳聽到這事情的。

grape.vine

n.（名詞）
A vine on which grapes grow.
葡萄藤：葡萄在其上生長(zhǎng)的藤

The informal transmission of information, gossip, or rumor from person to person.
謠傳；流言；謠言：在人們中間信息、閑話或謠言的不正式傳播
A usually unrevealed source of confidential information.
消息的秘密來源：通常沒有暴露的秘密消息的來源