EtymEx

brainstorm

/ˈbreɪnˌstɔːrm/noun, verb

sudden idea burst or collaborative problem-solving session

From O.English, from Proto-Germanic brain (the organ of thought) + O.English, from Proto-Germanic storm (a tempest).

Lineage

brain

storm

Germanicnot directly attestedSelect a stage for details, or drag it

The story

Before brainstorm meant a whiteboard crowded with sticky notes, it was a much darker weather report for the mind. In 1861, English speakers used brain-storm for an episode of delirious mania—a storm apparently raging inside the skull—while storm itself already meant not only bad weather but an attack or violent tumult. The cheerful modern sense emerged in the 1930s, when radio people spoke of “brainstorm boys” handling breaking news with hair-trigger ingenuity. Advertising executive Alex F. Osborn then turned the image into a method of group creativity, apparently imagining people using their brains to storm a problem; the technique was in circulation by about 1945 and the verb followed by 1947. The two roots also hide two different prehistoric pictures: brain may go back to a proposed Indo-European word for skull or brain, though some scholars reject that connection, while storm traces to a root meaning “stir up.” So a brainstorm is literally a disturbance in the thinking apparatus—once alarming, now something you schedule on Tuesday morning.

Modern usage

A vulgar slang term for simultaneous oral sex involving multiple people.

Heard in
internet slang · sexual slang
See
Urban Dictionary entry

Related words

Words from the same roots

brain · Old English, from Proto-Germanic, ‘the organ of thought; intellectual power’

Derivedcerebral, frenetic, concussion, scatterbrain, intellectual, phrenology

storm · Old English, from Proto-Germanic, ‘a tempest, tumult, or violent onrush’

Derivedstir, stormy, tempest, cyclone, assault, commotion

Sources