godan verb (-ru)
Literal beheading; often used in historical or dramatic contexts. The kanji 斬る emphasizes cutting.
侍が罪人の首を切った。
The samurai beheaded the criminal.
godan verb (-ru)
Figurative use meaning to dismiss from a job; colloquial and somewhat blunt. Often written in kana.
彼は遅刻が多くて首を切られた。
He was fired for being late too often.
上司に首を切られそうだ。
I'm about to be sacked by my boss.