from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An officer on a merchant ship ranking immediately below the captain.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun nautical An officer on a merchant ship next in rank to the captain and responsible to the captain for the safety and security of the ship.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun the officer below the master on a commercial ship


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