noun:

• crying over spilt milk; complaining about things that have already happened - archaism
• speaking ill behind somebody's back; malicious gossip - archaism

expression / ichidan verb:

• to do something with painful reluctance; to have one's hair pulled from behind [literal] - idiom

expression:

• that was delicious - pun on 馬勝った, which is ateji for うまかった - humorous term ➜ うまい

noun:

• tying a person's limbs to two or four bulls and making them run in different directions (Warring States-era death penalty)

expression / noun:

• Lost Generation ➜ ロストジェネレーション