to act as a servant.
to wait on table, as a waiter.
to offer or have a meal or refreshments available, as for patrons or guests: Come early, we're serving at six.
to offer or distribute a portion or portions of food or a beverage, as a host or hostess: It was her turn to serve at the faculty tea.
to render assistance; be of use; help.
to go through a term of service, do duty as a soldier, sailor, senator, juror, etc.
to have definite use: This cup will serve as a sugar bowl.
to answer the purpose: That will serve to explain my actions.
(in tennis, badminton, handball, etc.) to put the ball or shuttlecock in play with a stroke, swing, or hit.