A steamship with the bow and upper deck rounded so as to shed water.(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 "whaleback" in a sentence
"He was a famous 'whaleback' -- I think that's what they call it -- on the Yale football team."
""whaleback" from Yale, recognized the visitor at the Denning box, and, with an untranslatable grunt, abruptly took his departure, leaving his sister to wonder over the strangeness of his actions."
"Then we laid two lengths of the stout canvas the full length of the boat over the whaleback, overlapping and nailing them to the same, so that they sloped away down over the gunnels upon each side as though they had formed a roof to us."