B2[C]a government department that is responsible for a particular area of activity: the diplomatic servicethe security servicesGovernment departments and organizationsC1[C or U]the time you spend working for an organization: She was given the award for a lifetime of public service.Working hours and periods of workWork, working and the workplaceservices[plural]formal›the particular skills that someone has and can offer to others: I may be needing the services of a surveyor soon, as I'm buying a house.Skill, talent and abilityin service›in use: The battleship has been in service since 1965.Using and misusingbe in serviceold-fashioned›to be employed as a servantServants, slaves and underlings