The term 'Clue Room' refers to four different rooms: a HALL (4 letters), a STUDY (5 letters), a LIBRARY (7 letters), and a LOUNGE (6 letters). A HALL is typically a large room in a house or other building, often used for formal occasions. A STUDY is a room in a house or other building used for reading, writing, or other activities requiring privacy or quiet. A LIBRARY is a room or building containing collections of books, periodicals, and sometimes films and recorded music for use by the public or a restricted group. Finally, a LOUNGE is a room in a house or other building used for relaxation, entertaining, or other social activities.