The action of helping or doing work for someone. A system supplying a public need such as transport, communications, or utilities such as electricity and water. A ceremony of religious worship according to a prescribed form; the prescribed form for such a ceremony. A set of matching dishes and utensils used for serving a particular meal. (in tennis and other racket sports) the action or right of serving to begin play. The formal delivery of a document such as a writ or summons. Perform routine maintenance or repair work on (a vehicle or machine). (of a male animal) mate with (a female animal).