down
1.
to reduce sth :
We aim to bring down prices on all our computers.
2.
to land an aircraft :
The pilot managed to bring the plane down in a field.
3.
to make an aircraft fall out of the sky :
Twelve enemy fighters had been brought down.
4.
to make an animal or a bird fall down or fall out of the sky by killing or wounding it :
He brought down the bear with a single shot.