Meaning of knock down

1. The strong winds were so powerful that they were able to knock down several trees in the neighborhood.
2. The bulldozer was used to knock down the old building to make way for a new shopping complex.
3. The boxer delivered a powerful punch that knocked down his opponent in the first round.
4. The children were playing a game of knock down the cans at the carnival.
5. The storm surge was so intense that it was able to knock down the seawall.
6. The protesters tried to knock down the barriers outside of the government building.
7. The firefighter had to knock down the door to rescue the family trapped inside the burning house.
8. The earthquake was strong enough to knock down buildings and cause widespread destruction.
9. The company decided to knock down their prices in order to attract more customers.
10. The wrecking ball was used to knock down the old bridge to make way for a new one.