くび
neck
On a giraffe there is an absurd amount of it. You follow it up, and up, and run out of sky before you get to the head. No cubby くび hole would take it: くび.
首になる くびになる is to be fired, the same idea as getting the chop.
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Emaki is not affiliated with, or endorsed by, Kaishi 1.5k or its authors. The word, reading and meaning come from the Kaishi 1.5k deck, used with their permission. The mnemonic, the note and the kanji breakdown are original work, published under CC BY-SA 4.0.