The term CUPFUL DINER is composed of six crossword solutions: JOE (3 letters), ADE (3 letters), TEA (3 letters), JAVA (4 letters), Eggnog (6 letters), and DOSE (4 letters). JOE is a common name, often used as a nickname for Joseph. ADE is a shortened form of the word 'ADEPT, ' meaning skilled or proficient. TEA is a type of beverage made from the leaves of the Camellia sinensis plant. JAVA is a type of coffee grown on the island of JAVA in Indonesia. Eggnog is a sweetened dairy-based beverage traditionally served during the winter holidays. DOSE is a measured amount of medicine or other substance taken at one time. Together, these words form the phrase 'Cupful Diner, ' which could refer to a restaurant that serves drinks such as TEA, coffee, eggnog, and ades in cups.