guidepost

/ˈɡaɪdpoʊst/
noun
  1. A sign or marker along a path or road that gives directions or information.
    • The old wooden guidepost pointed toward the village.
    • A guidepost at the fork in the road showed the distance to the next town.
    • We followed the guidepost to the hiking trail entrance.
  2. Something that provides guidance or a principle to follow.
    • For many, the constitution is a guidepost for justice and freedom.
    • The company's mission statement serves as a guidepost for decision-making.
    • Honesty was a guidepost in his personal and professional life.