One way to hold this word: something small that will not sit still or will not lie flat. On a hat, the wool gathers into one little ball that sticks up. On an old sweater, the surface rolls itself into dozens of tiny balls. In a game, the ball keeps hopping in your hands instead of settling. On the water, a light thing keeps lifting and dropping. Small, round, and never quite still — that picture runs under every use.
From the word’s history
Wiktionary records the noun as bob + -le (a diminutive ending) and the verb as bob + -le (a frequentative ending). Bob is a small quick up-and-down movement. So the noun side means a little thing, and the verb side means doing that little movement again and again.
來源資料把名詞記成 bob 加上表示「小」的字尾 -le，把動詞記成 bob 加上表示「反覆」的字尾 -le。bob 本身是「快速地上下動一下」。所以名詞這邊走向「小小一顆」，動詞這邊走向「一直小小地動」。這剛好解釋了為什麼同一個字既是毛球，也是晃動。
Wiktionary entry for bobble, packet source_ref kaikki:3f6f69a190036ae4:613188070:7343 — etymology_text: "(noun): from bob + -le (diminutive suffix). (verb): from bob + -le (frequentative suffix). Compare bauble."
登入就可以看每一支怎麼連回核心畫面。