|Noah Webster's Dictionary|
(n.) A pouring or streaming downwards; esp., a heavy or continuous shower.
Downpour (4 Occurrences)
Job 37:6 For he says to the snow, Make the earth wet; and to the rain-storm, Come down. (See NAS NIV)
Isaiah 28:2 Behold, the Lord hath a mighty and strong one, as a storm of hail, a tempest of destruction, as a storm of mighty waters overflowing, that casteth down to the earth with violence. (See NIV)
Isaiah 30:30 And the LORD will cause His glorious voice to be heard, and will show the lighting down of His arm, with furious anger, and the flame of a devouring fire, with a bursting of clouds, and a storm of rain, and hailstones. (See NAS)
Habakkuk 3:10 The mountains saw you, and were afraid. The storm of waters passed by. The deep roared and lifted up its hands on high. (See NAS)