1.
the whole world, the land, the realm
Refers to the entire world or country. In historical contexts, it specifically means the realm or domain under a ruler's control.
天下の名城として知られている。
It is known as one of the greatest castles in the land.
天下に名を知らしめた武将だ。
He is a military commander who made his name known throughout the land.
このラーメンは天下一品だと言われている。
This ramen is said to be the finest in the world.
2.
supremacy, dominance, rule
The state of having supreme power or being the best. Used in expressions about taking control or being unrivaled.
天下を取る。
To seize power; to rule the land.
織田信長は天下統一を目指した。
Oda Nobunaga aimed to unify the realm.
試合に勝って、まるで天下を取ったかのように喜んだ。
After winning the match, he celebrated as if he had conquered the world.
天下 literally means "under heaven" and refers to the entire world or realm.
COMMON EXPRESSIONS:
- 天下を取る: to seize power, to conquer the realm
- 天下統一: unification of the realm
- 天下一品: the finest in the world
- 天下の: of/in the whole world (intensifier, "the greatest")
- 天下泰平: peace throughout the land
CULTURAL NOTE:
Deeply associated with Japan's Sengoku (Warring States) period, when rival warlords competed for 天下統一 (unification of the realm). The phrase 天下を取る is still used figuratively to mean achieving dominance or great success.