The term 'BAR OPENING' can be broken down into two crossword solutions: MINI (4 letters) and ISO (3 letters). MINI is a British automotive marque owned by BMW since 2000, and is known for its small cars. ISO is an abbreviation for the International Organization for Standardization, which is an international standard-setting body composed of representatives from various national standards organizations. Together, these two solutions form the term 'BAR OPENING', which is the process of OPENING a BAR or pub for business.