Definition of "larboard"

[…] harder besetAnd more endangered than when Argo passedThrough Bosporus betwixt the justling rocks,Or when Ulysses on the larboard shunnedCharybdis, and by th’ other whirlpool steered.

1674, John Milton, Paradise Lost‎, Book 2

The boat made a sharp half-turn to larboard, and then shot off in its new direction like a thunderbolt.

1841, Edgar Allan Poe, A Descent into the Maelström‎

Suddenly the foremost Martian lowered his tube, and discharged a canister of the black gas at the ironclad. It hit her larboard side, and glanced off in an inky jet, that rolled away to seaward, an unfolding torrent of black smoke, from which the ironclad drove clear.

1898, H. G. Wells, The War of the Worlds‎, Book One, Chapter 17

"It means to turn to larboard."

2001, Dudley Pope, Ramage & the Rebels

The schooner ploughed on Northerly for a minute longer, before tacking again to lay herself half a mile in advance of the nearer corvette, now up on their larboard quarter.

2004, Dewey Lambdin, Havoc's Sword

The Java, placing herself under the same canvas as her opponent, stood directly for her; and at 2 h. 10 m. P. M., when within half a mile, the Constitution opened a fire from her larboard guns, and a second broadside was discharged before the Java returned the fire from a position close upon the larboard-bow of her antagonist.

2012, Paul Harris Nicolas, Historical Record of the Royal Marine Forces

This time an almost defeated sigh was heard from both the larboard and starboard gun crews. Even though the larboard gun crew was up first, the starboard crew had seen what was eventually to be their next target as well.

2014, Barry D. Boothe, INFIDEL: Don’t Tread On Me