Meaning

• A person who manages the property or affairs for another entity, particularly the chief administrator of a medieval manor.

• A ship's officer who is in charge of making dining arrangements and provisions.

• A flight attendant, a male flight attendant.

• A union member who is selected as a representative for fellow workers in negotiating terms with management.

• A person who has charge of buildings and/or grounds and/or animals.

• A fiscal agent of certain bodies.

  "a steward in a Methodist church"

• In some colleges, an officer who provides food for the students and superintends the kitchen; also, an officer who attends to the accounts of the students.

• In Scotland, a magistrate appointed by the crown to exercise jurisdiction over royal lands.

• In information technology, somebody who is responsible for managing a set of projects, products or technologies and how they affect the IT organization to which they belong.

Meaning

• To act as the steward or caretaker of (something)