1. plural of placer: deposits of sand, gravel, or other sediments containing valuable minerals that can be obtained by washing
Usage: geology; mining
2. plural of placer: people who place things in position

Examples

• The miners searched for gold in the river placers.
• Rich placers were discovered along the creek bed.
• The geological survey identified several promising placers in the valley.
• Historical placers in California attracted thousands of prospectors.
• The placers carefully arranged the decorations for the event.
• Event placers positioned the chairs in neat rows.
• The placers worked efficiently to set up the exhibition.