a person who is hired to manage a large household or estate and perform jobs such as supervising staff/servants, managing accounts, and collecting rent;
e.g. The steward instructed the servants on how to behave when guests were visiting.
(verb)
to supervise or manage arrangements at a large public event;
e.g. They appointed a group of people to steward the fundraiser.
(noun)
a person who is employed on a ship, airplane, or train and whose job is to attend to passengers and supervise the serving of food and drinks;
e.g. I asked the steward for a glass of water when I boarded the plane.