duckboard
/ˈdʌkˌbɔrd/
noun
- A board or series of boards laid down to form a path over wet or muddy ground.
- The old duckboard path through the swamp was slippery but kept our boots dry.
- The workers laid duckboards across the muddy construction site so they could walk without sinking.
- After the rain, we used duckboards to cross the flooded campsite.