An act of knocking someone to the ground, especially in boxing. The boxer delivered a powerful punch that resulted in a knockdown.
The store is having a sale with knockdown prices on all electronics.
A structure or object that can be easily disassembled and reassembled. The furniture was a knockdown, making it easy to transport and set up.
A deliberate reduction in the expression level of a gene, typically achieved through RNA interference or similar techniques. The researchers performed a knockdown of the target gene to study its function.