1. people who pierce body parts professionally or as a practice
2. tools or instruments used for making holes through materials

Examples

• The tattoo parlor employed several experienced piercers.
• Professional piercers must follow strict hygiene protocols.
• She visited one of the best piercers in the city for her ear piercing.
• The leather workers used sharp piercers to make holes in the hide.
• These metal piercers can penetrate even thick materials.
• The craftsman kept his piercers well-sharpened for precise work.