Definitions of hall:

• noun:   a large building for meetings or entertainment
• noun:   a large room for gatherings or entertainment

  Example: "Lecture hall"

• noun:   a large building used by a college or university for teaching or research

  Example: "Halls of learning"

• noun:   United States astronomer who discovered Phobos and Deimos (the two satellites of Mars) (1829-1907)
• noun:   United States explorer who led three expeditions to the Arctic (1821-1871)
• noun:   United States chemist who developed an economical method of producing aluminum from bauxite (1863-1914)
• noun:   United States child psychologist whose theories of child psychology strongly influenced educational psychology (1844-1924)
• noun:   English writer whose novel about a lesbian relationship was banned in Britain for many years (1883-1943)
• noun:   an interior passage or corridor onto which rooms open

  Example: "The elevators were at the end of the hall"

• noun:   the large room of a manor or castle
• noun:   a large entrance or reception room or area
• noun:   a college or university building containing living quarters for students
• noun:   a large and imposing house
• name:  A surname (very common: 1 in 500 families; popularity rank in the U.S.: #26)