1.
When the sun beats down , it is very hot and bright.
PHRASAL VERB
2.
When the rain beats down , it rains very hard.
Even in the winter with the rain beating down, it’s nice and cosy in there.
= pour down
PHRASAL VERB : V P
3.
If you beat down a person who is selling you something, you force them to accept a lower price for it than they wanted to get.
A fair employer, when arranging for the pay of a carpenter, does not try to beat him down...
Beat down the seller to the price that suits you.
= knock down
PHRASAL VERB : V n P , V P n (not pron)