an arched structure built over the deck of a ship as a protection against heavy seas
Something shaped like the back of a turtle, especially:
a. Nautical An arched structure erected over the deck of a ship as protection from heavy seas.
b. Archaeology A stone tool with a convex side.
- tur′tle·back′, tur′tle·backed′
- Anything having the shape of a turtle's back (that is, its shell.)
- (The addition of quotations indicative of this usage is being sought): A library binding of a mass market paperback with a generic hardcover.
- Any plant of the genus Psathyrotes of annual and perennial forbs and low subshrubs native to dry areas of southwestern North America.