The term 'LAB HOLDER' can be solved by the crossword solution 'LEASH'. A LEASH is a type of rope or strap that is used to control or restrain an animal, usually a dog. It is typically attached to a collar or harness and held by the owner, allowing them to guide the animal's movements and keep it from running away or getting into trouble. Leashes are also commonly used in other contexts, such as for guiding horses or controlling livestock.