The term PRESERVES HOLDER can be solved by two crossword solutions: JAR (3 letters) and JAMJAR (6 letters). A JAR is a cylindrical container with a wide mouth, typically made of glass, ceramic, or plastic, used for storing food or other items. A jamjar is a type of JAR specifically designed to store jams, jellies, and preserves. Jamjars are usually made of glass and have a lid that seals the contents inside.