Hold a handful of raw wool. It is thick, soft and warm, it springs back when you squeeze it, and it has no edge — you cannot say exactly where the fluff stops and the air begins. Every use of this word leans on one of those two facts. Because wool is warm, the word covers hats, sweaters and animal coats, and can even become the name of the garment itself. Because wool has no edge, the word can be turned on an argument that never quite says what it means, or on a place where nobody has trimmed anything into order.
From the word’s history
From Middle English wolly, which is simply wool plus the ending -y. The word has never been anything but wool with a property-ending on it, which is why every branch is still an answer to the question: what is wool like?
證據裡說，woolly 來自中古英語 wolly，就是 wool 加上字尾 -y。這個字從頭到尾都只是「羊毛」加上「有那個性質」。所以每一條分支，其實都在回答同一個問題：羊毛是什麼樣子的？
Wiktionary entry for woolly supplied in the evidence packet (source_ref kaikki:3f6f69a190036ae4:573140287).
登入就可以看每一支怎麼連回核心畫面。