If you hear or learn something on the grapevine, you hear it or learn it in casual conversation with other people.
例句
He'd doubtless heard rumours on the grapevine...他无疑是听到了小道消息。I had heard through the grapevine that he was quite critical of what we were doing.我听到有传言说他对我们在做的工作非常不满。
N-COUNT
葡萄藤
A grapevine is a climbing plant on which grapes grow.
英汉词典释义
n.
传闻, 小道消息
I heard about your success on the office grapevine.我听到了办公室的传闻, 说你取得了成功。
通过小道消息;根据传闻
I heard on the grapevine that you’re leaving.我听小道消息说你要离开。
英英词典释义
Noun
1. gossip spread by spoken communication;
"the news of their affair was spread by word of mouth"
2. any of numerous woody vines of genus Vitis bearing clusters of edible berries