1.
to break and fall to the ground :
The ceiling came down with a terrific crash.
2.
( of rain, snow, etc. ) to fall :
The rain came down in torrents.
3.
( of an aircraft ) to land or fall from the sky :
We were forced to come down in a field.
4.
if a price, a temperature, a rate, etc. comes down , it gets lower :
The price of gas is coming down.
Gas is coming down in price.
5.
to decide and say publicly that you support or oppose sb :
The committee came down in support of his application.
6.
to reach as far down as a particular point :
Her hair comes down to her waist.