A picture to hold: a rose that has not opened. Small, tightly rounded, a deep concentrated red, and clearly not finished yet. Everything else the word does can be seen as someone holding that bud up next to something else, a small red mouth, or a young person.
可以想成一顆還沒打開的玫瑰：小小的、圓圓的、緊緊捲著，紅得很集中，而且看得出來「還沒開」。這個字的其他用法，大多可以想成有人把這顆花苞舉起來，拿去比別的東西，比一張小而紅的嘴，或比一個年輕的人。
From the word’s history
The source gives the formation directly: rose plus bud. Both parts keep their plain meanings, which is why the picture stays so clear.
來源直接說明了組成：rose 加 bud。兩半都保留原本的意思，所以畫面才這麼清楚。
Wiktionary, "rosebud"
登入就可以看每一支怎麼連回核心畫面。