suffix
Suffix used in compound words to indicate a route or road, such as in 街道 (highway) or 通路 (passage). Not used as a standalone noun.
「街道」の「路」は、通り道を表す接尾辞です。
The 路 in 街道 is a suffix meaning a route or road.
suffix
distance travelled in a day
Rare suffix indicating a day's travel distance, found in classical or historical contexts. Not productive in modern Japanese.
古典では「一日路」のように、一日の行程を表すのに「路」が使われた。
In classical texts, 路 was used as in 一日路 to indicate a day's journey.
suffix
one's ... (age, e.g. 40s, 60s)
Suffix attached to numbers to indicate a decade of age, as in 四十路 (one's forties) or 七十路 (one's seventies). Somewhat literary or old-fashioned; 代 (だい) is more common in modern speech.
See also: 七十路
彼は四十路を迎えたばかりだ。
He has just entered his forties.