noun
- plural of umbo; the raised central bosses on shields or the beaks of bivalve shells
Usage: technical; archaeology; biology
Examples
- The ancient Roman shields featured prominent umbones for deflecting blows.
- Archaeologists identified the warrior’s burial by the bronze umbones found with the shield remains.
- The bivalve’s umbones showed clear growth rings indicating its age.
- Museum visitors can observe the decorative umbones on the Celtic shields.
- Marine biologists examine the umbones to determine the mollusk’s development stages.