A person unfamiliar with the sea or seamanship.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "landlubber" in a sentence
"The 'landlubber' might apply to other natives; but I fear they could hardly be called"
"It was a bitter disappointment to him that his father forbade his going to sea and was educating him to be a "landlubber," which he had been taught by his boy associates to regard as the most contemptible thing on earth."
"I noticed that he called me 'landlubber' very frequently, but I had no idea whether he meant to compliment or abuse me, though it seemed more likely to me that it was the latter."