The term DELI SUB is a combination of two words, 'deli' and 'SUB'. A deli is a store that sells prepared food such as sandwiches, salads, and other items. A SUB is a type of sandwich that is typically made with a variety of meats, cheeses, and vegetables. The crossword solution for DELI SUB is HERO, which refers to the person who makes the sandwich. The HERO is the person who puts together the ingredients to make the sandwich.