Definition of "turtleback" []

• Something shaped like the back of a turtle, especially: (noun)
• Nautical An arched structure erected over the deck of a ship as protection from heavy seas. (noun)
• Archaeology A stone tool with a convex side. (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.

• "Bruno, a mix who's available for adoption, went organic in a pattern, wool knit "turtleback" sweater."
• "So now besides the turtleback I also have a new accessory since the last 2 months."
• "The reasonably small size and stiff turtleback cover make this dictionary just a little too large to fit in a pocket, but still readily portable."