Pine tree juice is a term used to describe the RESIN that is produced by certain species of pine trees. It is a sticky, yellowish-brown substance that is harvested from the bark of the tree and has been used for centuries as a medicinal remedy. RESIN, the five letter crossword solution for Pine Tree Juice, is a natural product that is composed of terpenes and other organic compounds. It is often used in the production of varnishes, paints, and adhesives.