核心畫面
One way to hold this word: picture a bottle of black ink tipped over. Wherever the ink touches — a finger, a cuff, the edge of a page — it leaves a black mark that will not rub off. And if the ink covers the whole scene, nothing shows through it at all. Both uses of inky can be seen growing out of that one bottle: something has ink on it, or something is as black as the ink itself.
可以想成一瓶被打翻的黑墨水。它碰到哪裡，哪裡就留下一塊擦不掉的黑——手指、袖口、紙的邊緣。要是整個畫面都被它蓋住，就…更多收起
可以想成一瓶被打翻的黑墨水。它碰到哪裡，哪裡就留下一塊擦不掉的黑——手指、袖口、紙的邊緣。要是整個畫面都被它蓋住，就什麼也透不出來了。inky 的兩個用法，都可以看成從這瓶墨水長出來：一個是沾到了它，一個是黑得像它。From the word’s history
The supplied entry derives inky from ink + -y, the ending that says 'having that quality', as in dusty or sleepy. So the word starts life meaning 'ink-ish', which is exactly where both uses sit.
來源把 inky 拆成 ink 加上 -y；-y 這個尾巴表示「帶有那種特質」，像 dusty、sleepy。所以這個字一開始就是「墨水感的」，兩個用法正好各站一邊：沾到墨水，或黑得像墨水。
Wiktionary entry for inky (adj), source_ref kaikki:3f6f69a190036ae4:1287845738, supplied in this packet