Fig. [for something, such as birds or bombs] to dive down on someone or something, with a loud noise or very swiftly. The bombs screamed down on the helpless peasants. As the bombs screamed down, some people ran and some prayed.
to scream loudly at someone; to outscream someone. (Compare this with shout someone down.) The angry crowd screamed down the politician. They screamed her down and drove her from the platform.