Brainstorming

a conference technique of solving specific problems, amassing information, stimulating creative thinking, developing new ideas, etc., by unrestrained and spontaneous participation in discussion.

a sudden impulse, idea, etc.
a fit of mental confusion or excitement.

brainstorming.
of or relating to brainstorming.
to conduct or practice brainstorming.
to subject (a problem) to brainstorming.
Contemporary Examples

Winds of Change: Davos Speaks Daily Beast Promotions February 13, 2011
So You Think You Can Busk: a Road Trip Search for the Best European Street Artists Nina Strochlic June 6, 2013
When a Bomb Goes Off in Afghanistan Heidi Vogt May 11, 2013
Luci: A Revolutionary Solar-Powered Lantern That Shines a Light on Poverty Janine di Giovanni May 25, 2013
Is America Out of Ideas? Daniel Gross August 26, 2013
American Striptease Rachel Kramer Bussel November 10, 2009
Mike Judge’s Genius Satire ‘Silicon Valley’ Skewers Tech Titans Andrew Romano April 2, 2014
Nail Polish Is the Next Wearable Tech Elizabeth Lopatto June 3, 2014
Interview: Kristen Bell, Voiceover Queen, On ‘Frozen,’ ‘Veronica Mars,’ & More Andrew Romano December 17, 2013

Historical Examples

Makers Cory Doctorow

noun
intensive discussion to solve problems or generate ideas
noun
a severe outburst of excitement, often as the result of a transitory disturbance of cerebral activity
(Brit, informal) a sudden mental aberration
(informal) another word for brainwave
n.