This is the 23rd most frequent Russian word.
можно
"Можно" means "it is possible" or "one may."
Here, 'можно' is used to politely ask if a particular action or request is permissible or can be fulfilled.
Можно мне стакан воды, пожалуйста?
Can I have a glass of water, please?
In this context, 'можно' expresses that something is permitted or allowed in a certain setting.
В библиотеке можно читать книги бесплатно.
In the library, one can read books for free.
Here, 'можно' indicates a permissible action based on current conditions or circumstances.