TRAVEL ACROSS can be defined as the act of traversing a physical space, such as a road or a river. The term is often used to describe a journey from one place to another, usually over a long distance. The crossword solution for this term is TRAVERSE, which means to go across or pass through a physical space. This could involve walking, driving, sailing, or flying. It is a common way to get from one place to another, and is often used to explore new places or to visit family and friends.