1. plural of firmer; people or things that make something firm or more solid
Usage: rare or technical usage
2. plural of firmer; woodworking or engraving tools with curved cutting edges used to shape or hollow out material
Usage: specialized; woodworking/engraving context

Examples

• The carpenter selected several firmers from his tool collection to carve the decorative details.
• Different sizes of firmers allow artisans to create varied depths and curves in their work.
• The engraver used specialized firmers to hollow out the design on the metal plate.