One appointed to act as guardian of the estate of a person not legally competent to manage it, or of an absentee; a trustee.
A member of a curatorium, a board for electing university professors, etc.
A person who manages, administers or organizes a collection, either independently or employed by a museum, library, archive or zoo.
A person who holds open the door at the entryway (entrance) to a building, summons taxicabs, and provides an element of security; in apartment buildings, he also accepts deliveries and may perform certain concierge type services.