noun
age twenty; one's twenties
A somewhat literary or old-fashioned way to refer to the age of twenty or the decade of one's twenties. In modern Japanese, 二十歳 (はたち) is more common for the exact age, and 二十代 (にじゅうだい) for the decade.
彼女はまだ二十路の若さだ。
She is still young, in her twenties.
二十路を迎えたばかりの頃は、何もかもが新鮮だった。
When I had just turned twenty, everything felt fresh.
The standard modern word for one's twenties as a decade. 二十路 can also refer to the decade but is more poetic.
Composed of 二十 (twenty) and 路 (road, path), a suffix used in age-related terms like 三十路 (みそじ, age thirty). The exact derivation is uncertain, but 路 here is a traditional counter for years or ages.