This is the 691st most frequent Persian word.
سیل
Flood
Here, 'سیل' refers to a natural disaster or flood.
در بهار، سیل شدیدی در شمال کشور رخ داد.
In the spring, a severe flood occurred in the north of the country.
In this sentence, 'سیل' is used metaphorically to describe a vast number of individuals as a flood.
سیل جمعیت به سوی استادیوم روانه شدند.
A flood of people headed toward the stadium.
'سیل' in this context is used metaphorically to describe a large and overwhelming quantity of activities.