1.
best in Japan, number one in Japan
The top or finest in all of Japan. Used to describe something that ranks first nationwide in some quality or measure.
Can be read as either にっぽんいち or にほんいち, but にっぽんいち is more common and emphatic.
Common patterns
- 日本一の~: the best/greatest ~ in Japan
- ~は日本一だ: ~ is the best in Japan
- 日本一高い: the tallest/most expensive in Japan
Usage
Often paired with superlative-like adjectives (高い, 大きい, 長い, 美しい, etc.). Can also be used subjectively to express strong praise.