This is the 1130th most frequent Russian word.
ru
The word "ru" does not have a standalone meaning in Russian; it is often used as an abbreviation for "Russia" or the Russian language, especially online.
Here, 'ru' is used as part of a domain name, indicating the website's connection to Russia.
Я зарегистрировался на сайте exampleru.
I registered on the website exampleru.
In this sentence, 'ru' is part of the Russian word 'горой' (mountain), showing its function as a root in the context of geography.
Нужно поставить флаг на вершину горы.
We need to place a flag on the mountain's summit.
Finally, 'ru' is present in 'русский' (Russian), indicating something pertaining to Russia or its language.