1. plural of first; things that happen or are done for the first time
2. first-place finishes or victories in competitions
3. items of the highest quality or grade

Examples

• She collected many firsts during her athletic career.
• The team celebrated their three firsts in the swimming competition.
• These firsts are expensive because they have no defects.
• His collection includes several historical firsts in aviation.
• The store sells only firsts, never damaged goods.
• Many firsts in technology happened during the 20th century.