to cause to fall to the ground

to defeat someone decisively

गिराना

English Usage: The construction crew will knock down the old building.

Hindi Usage: निर्माण दल पुरानी इमारत को गिरा देगा।

to reduce the price significantly

कीमत कम करना

English Usage: They decided to knock down the prices during the sale.

Hindi Usage: उन्होंने बिक्री के दौरान कीमतें कम करने का फैसला किया।