What is the meaning of brain storming?

Brain storming is one of the important techniques of collection of ideas and method s from specific group of people for the sake of information requirements.
Mainly this technique is used in project management process for developing project charter.
Thank you Best regards Eng.Ali Harin

Brain storming collecting ideas before writing or saying anything.
for example if you have an essay to write you'll do a brain storming to outline and organize your thought.

A rush of creative and helpful data inside someones brain  that will ultimately lead to sufficient results.