たった一ひとつ

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

only one; just one; single

Emphasizes that there is exactly one, often with a nuance of scarcity or uniqueness. Used as a prenominal modifier with の.

See also: たった

• 冷れい蔵ぞう庫こにたった一ひとつの卵たまごしかない。

  There is only one egg in the fridge.

• 彼かれはたった一ひとつのチャンスを逃のがした。

  He missed his only chance.