The term 'OXEN HARNESS' is composed of two words: 'OXEN' and 'HARNESS'. OXEN are a type of domesticated bovine animals, usually used for plowing or hauling heavy loads. A HARNESS is a device used to attach an animal to a cart or other vehicle, allowing it to pull the load. The crossword solution for this term is 'YOKE', which is a wooden bar or frame that is fastened over the necks of two OXEN and attached to the plow or cart they are pulling.