A hall event is an event that takes place in a large room or hall. The term 'hall event' can refer to a variety of events, such as lectures, concerts, conferences, and other gatherings. The crossword solution for the term 'hall event' is 'LECTURE, ' which is an event where one or more speakers present information to an audience. Lectures can be educational, informative, or entertaining, and they often involve a question and answer session at the end.