1. plural of capper: people who put caps or lids on containers
Usage: industrial
2. plural of capper: things that serve as a finishing touch or climax
Usage: informal

Examples

• The factory employed several cappers to seal the bottles.
• The cappers worked quickly on the assembly line.
• Those jokes were real cappers to an already funny evening.
• The fireworks display provided perfect cappers to the celebration.
• The bottle cappers need regular maintenance.
• Her final remarks were the cappers to a brilliant speech.