Collect in bulk is a term used to describe the process of gathering large amounts of items at once. It is often used in business and retail settings, where it is more efficient to purchase items in bulk rather than individually. The term can also be used to describe the act of collecting items for personal use, such as when someone collects a large number of items for a hobby or collection. The crossword solution for this term is 'AMASS, ' which means to accumulate or gather together in large quantities.