The left side of a ship, looking from the stern forward to the bow; port side.
Origin
From Middle English ladde-bord, latebord, most likely referring to the side of the ship on which cargo was loaded. Changed to larboard in the 16th century by association with starboard. (Texts from the 1500s have spellings like lerbord, leereboord, larboord, corresponding to how they spell sterbord, steereboord, starboord.)
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