This is the 16777th most frequent Russian word.
служебное
"Service," "official," or "auxiliary" depending on context.
In this sentence, 'служебное' modifies 'помещение', indicating a room designated for official or staff use.
Служебное помещение закрыто после десяти вечера.
The service room is closed after ten p.m.
Here, 'служебное' describes 'объяснение', referring to an explanation provided in an official or formal context.
Служебное объяснение указывает на причину происшествия.
The official explanation points to the reason for the incident.
In this example, 'служебное' modifies 'письмо', designating the letter as one related to official business or responsibilities.