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.
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.'
登入就可以看每一支怎麼連回核心畫面。