noun
footboard; gangplank; scaffolding board
A board used as a temporary walkway, such as a plank for boarding a ship, crossing a gap, or walking on scaffolding.
船に乗るため、歩み板を渡った。
I crossed the gangplank to board the ship.
工事現場で歩み板の上を慎重に歩いた。
I walked carefully on the scaffolding board at the construction site.