noun
the neck
Colloquial, somewhat childish or affectionate term for the neck. Often used in the phrase 首っ玉に抱きつく (to throw one's arms around someone's neck).
子どもが母親の首っ玉に抱きついた。
The child threw their arms around their mother's neck.
彼女は彼の首っ玉にしがみついて離れなかった。
She clung to his neck and wouldn't let go.