The term 'Palm Drink' can be summarized by two crossword solutions: Assai (5 letters) and NIPA (4 letters). Assai is a type of palm drink made from the fruit of the assai palm tree, which is native to South America. NIPA is a type of palm drink made from the sap of the NIPA palm tree, which is native to Southeast Asia. Both drinks are popular in their respective regions and are used for both culinary and medicinal purposes.