天てん下か第だい一いち

noun, noun which may take the genitive case particle 'no'

the best in the land; unrivaled in the country

Emphatic, somewhat literary expression meaning 'the very best in the whole country'. Often used in historical or dramatic contexts, or in set phrases like 天下第一の～.

• 彼かれは天てん下か第だい一いちの剣けん豪ごうと称たたえられた。

  He was praised as the greatest swordsman in the land.

• この城しろは天てん下か第だい一いちの堅けん固ごさを誇ほこる。

  This castle boasts the strongest defenses in the whole country.