The term 'Busy Period' can be summarized as a time of increased activity or demand. The crossword solution for this term is 'RUSH', which implies that the activity or demand is happening quickly and urgently. This could refer to a period of time in a business, such as the holiday season, when there is an influx of customers or orders. It could also refer to a period of time in a person's life, such as when they are preparing for an important event or deadline. In either case, it is a time of increased activity and urgency.