植物本身
這一族就是字面意思，核心畫面本身。
noun · B2
A climbing plant on which grapes grow. Its long woody stems curl around anything they touch and spread sideways, so one plant can cover a wall, a fence or a whole row of frames.
葡萄藤
核心畫面
Start with the plant itself: a vine that will not stay where it was put. Its stems curl round whatever they touch, cross over each other, run along wires and fences, and end up somewhere nobody planted them. There is no straight line anywhere in it, and no single path you could trace from one end to the other. Everything else the word does keeps that tangle: news that curls from person to person, and feet that keep crossing as a dancer travels sideways.
可以先從植物本身看起：葡萄藤不會乖乖待在原地。莖會纏住旁邊的東西，彼此交錯，順著鐵絲和籬笆一路延伸，最後長到沒有人種…更多收起
可以先從植物本身看起：葡萄藤不會乖乖待在原地。莖會纏住旁邊的東西，彼此交錯，順著鐵絲和籬笆一路延伸，最後長到沒有人種過的地方。整棵藤找不到一條直線，也沒有一條路徑能從頭追到尾。這個「到處纏、追不出路線」的畫面，可以想成後面兩個用法的共同底。消息在人跟人之間繞著傳是這樣，跳舞時兩隻腳一直交叉往旁邊走，也是這樣。From the word’s history
The packet gives the word's make-up as grape + vine, which is as far as the evidence goes: the plant that grapes grow on. The later uses are not documented in the packet as historical developments, so the links drawn here are ways of holding the word together, not claims about how it changed.
來源只記了一層：grapevine 是 grape（葡萄）加 vine（藤），也就是結葡萄的那種藤。後面兩個用法怎麼來的，packet 裡沒有紀錄。所以這裡畫的連結是幫助理解的方式，不是歷史上的演變證據。
Wiktionary (kaikki) entry for grapevine, source_ref kaikki:3f6f69a190036ae4:553749484:57373, etymology_text 'From grape + vine.'
Three branches
消息怎麼傳
把爬藤的路線借來講消息：一個人傳一個人，橫著蔓延，沒有官方管道，也沒有人說得出完整路徑。
noun · B2
The informal chain of people who pass news, rumours and private information along by telling each other, instead of it coming from any official announcement.
小道消息網
腳步的交叉
借的是藤莖互相交錯的樣子：兩隻腳一直交叉再打開，人往旁邊移動。
noun · B2
A sideways step in dancing, exercise classes and skating, in which one foot keeps crossing over or behind the other as you travel across the floor or the ice.
交叉側步