1. instances of knocking someone down, especially in boxing when a fighter is knocked to the ground
Usage: sports
2. furniture or structures designed to be easily assembled and disassembled
Usage: manufacturing
3. significant reductions in price or value
Usage: informal

Examples

• The boxer suffered three knockdowns in the first round.
• He scored two knockdowns before winning by technical knockout.
• The store sells knockdown furniture that customers assemble at home.
• These knockdown bookcases are perfect for college dorms.
• The retailer offered major knockdowns on winter clothing.
• Stock prices experienced severe knockdowns during the market crash.