Meaning

• To hit or knock (something), intentionally or accidentally, so that it falls.

  "As I took the can off the shelf, I knocked down the one beside it."

• To demolish.

  "We knocked down the garden shed when we moved."

• At an auction, to declare (something) sold with a blow from the gavel.

  "The picture was knocked down for £50."

• To reduce the price of.

  "They knocked it down by another £5, so we bought it."

• To drink fast.

  "I love to go down the pub and knock down pints of lager."

• (usually passive) To disassemble for shipment.

  "The furniture is shipped knocked down, so assembly is required."