1. plural of turtleback; rounded, dome-shaped structures or formations resembling a turtle’s shell
Usage: often used in geological or architectural contexts
2. armored structures on warships with curved surfaces designed to deflect projectiles
Usage: naval; historical

Examples

• The rocky turtlebacks dotted the landscape like ancient monuments.
• Geologists studied the granite turtlebacks formed by glacial erosion.
• The warship’s turtlebacks protected the gun turrets from enemy fire.
• Hikers climbed over the smooth turtlebacks in the national park.
• The architect designed the building with turtlebacks to shed rainwater efficiently.
• Naval engineers reinforced the ship’s turtlebacks with additional steel plating.