Real Dictionary

hall
countable noun: A hall in a building is a long passage with doors into rooms on both sides of it.
countable noun: The hall in a house or flat is the area just inside the front door, into which some of the other rooms open.

Hall in American English
Charles Martin1863-1914; U.S. chemist: discovered electrolytic process for reducing aluminum from bauxite
the great central room in the dwelling of a king or chieftain, where banquets, games, etc. were held
noun: a corridor or passageway in a building

hall in British English
noun: a room serving as an entry area within a house or building
noun: Charles Martin. 1863–1914, US chemist: discovered the electrolytic process for producing aluminium

hall in Hospitality
noun: A hall in a building is a long passage with doors into rooms on both sides of it.