1. a heavily discounted item offered by a retailer to attract customers into a store, especially during a sale or holiday shopping period
Usage: informal; chiefly North American; commonly used in retail and marketing contexts
2. something that is very successful or impressive and attracts a large audience or attention
Usage: informal; figurative use

Examples

• The store advertised a doorbuster sale with televisions marked down 50 percent.
• Black Friday doorbusters bring crowds of shoppers to the mall early in the morning.
• That new movie was a doorbuster, breaking box office records on opening weekend.
• The retailer used doorbusters to drive foot traffic during the holiday season.
• Customers lined up outside the store waiting for the doorbuster deals to begin.
• The company's latest product launch was a doorbuster that exceeded all sales expectations.