手上拿的那塊板子
這一支就是那個實物本身。
noun · A2
A small flat board, usually of hard plastic or card, with a clip at the top that holds sheets of paper in place, so you can write on them while you are standing up or walking around.
板夾（寫字墊板）
核心畫面
Picture a stiff board with a metal clip at the top. You push a sheet of paper under the clip, and now it is held: it will not blow away, it will not slide off, and you can write on it standing in a corridor. The paper is not staying there forever — it is being held until you are done with it, and then the next sheet goes under the clip.
可以想成一塊硬板，上面有個金屬夾。你把一張紙塞進夾子底下，它就被固定住了：吹不走、滑不掉，站在走廊上也能寫字。那張紙…更多收起
可以想成一塊硬板，上面有個金屬夾。你把一張紙塞進夾子底下，它就被固定住了：吹不走、滑不掉，站在走廊上也能寫字。那張紙不會永遠留在那裡——它只是先被夾著，等你用完，下一張再換上去。clipboard 的兩個意思都靠這個「先夾著等你用」的動作在運作。From the word’s history
Wiktionary gives the word as clip + board. The name simply describes the object: a board with a clip.
Wiktionary 說這個字就是 clip（夾子）＋ board（板子）。名字等於把東西的長相講完了，所以第一個意思幾乎不用解釋；第二個意思則是把這個名字借去用在看不見的地方。
Wiktionary via kaikki extract kaikki:3f6f69a190036ae4:710023396, entry 'clipboard': "From clip + board."
Two branches
電腦裡看不見的那塊板子
電腦需要一個地方，把你剛複製的東西先放著，等你貼出來——那正是夾子在做的事，所以名字就直接借過來了。這是概念上的延伸，不是說電腦裡真的有塊板子。
noun · A2
A place in the memory of a computer or phone that holds whatever you have just copied or cut, and keeps it there until you paste it somewhere else.
剪貼簿