- Archaeology. tortoise-core.
- Furniture. an oval or elliptical boss.
Origin of turtleback
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for turtleback
Because of its shape, Singer company brochures of the 1920s referred to it as the Turtleback Machine.The Invention of the Sewing Machine
Grace Rogers Cooper
- an arched projection over the upper deck of a ship at the bow and sometimes at the stern for protection in heavy seas
- (now obsolete in archaeological usage) a crude convex stone axe