storm drain

: a disturbance of the atmosphere marked by wind and usually by rain, snow, hail, sleet, or thunder and lightning

: a heavy fall of rain, snow, or hail

: wind having a speed of 64 to 72 miles (103 to 117 kilometers) per hour

: to blow with violence

: to rain, hail, snow, or sleet vigorously

: to attack by storm

: filter

: to draw off (liquid) gradually or completely

: to cause the gradual disappearance of

: a means (such as a pipe) by which usually liquid matter is drained

: the act of draining

: a gradual outflow or withdrawal : depletion