(idiomatic) Back to the beginning following an unsuccessful attempt.

A slightly elevated path for pedestrians over sandy or swampy ground, typically made out of wood; specifically (Canada, US) one running alongside a body of water or beach.

To install a boardwalk over.

An ice yacht. / An icebreaker; a ship that breaks through ice.

A board on which electronic components and their interconnecting circuits are mounted or etched

(obsolete) A sleigh for saw logs or heavy timber resting on two pairs of two short runners.

To ride a bobsleigh.

A building at the edge of a river, lake or other body of water in which boats are kept.

A sturdy board, used for cutting and preparing food.

A boat used for fishing.