1. A small crown or coronet; a decorative headpiece resembling a crown.
Usage: archaic; literary
2. In fortification, a small outwork or bastion shaped like a crown.
Usage: military; historical

Examples

• The princess wore a delicate crownet adorned with pearls.
• The fortress was protected by a series of crownet fortifications.
• In medieval times, a crownet was often given as a symbol of honor.
• The architect designed the crownet to command views of the surrounding valley.