The term 'Rum Partner' is a combination of two crossword solutions, COLA and COKE. COLA is an abbreviation for 'carbonated soft drink', while COKE is a brand name for a popular carbonated soft drink. Both terms refer to a type of beverage that is made with carbonated water, sugar, and flavoring. Rum Partner is a combination of these two words, referring to a type of alcoholic beverage that is made with rum and a carbonated soft drink.