.an act of helpful activity; help; aid: to do someone aservice.2.the supplying or supplier of utilities or commodities, aswater, electricity, or gas, required or demanded by thepublic.3.the providing or a provider of accommodation andactivities required by the public, as maintenance, repair,etc.: The manufacturer guarantees service and parts.4.the organized system of apparatus, appliances,employees, etc., for supplying some accommodationrequired by the public: a television repair service.5.the supplying or a supplier of public communication andtransportation: telephone service; bus service.