think tank

think tank idiom
A group or organization dedicated to problem-solving and research, especially in such areas as technology, social or political strategy, and the military. For example, The congressional leaders rely too heavily on that conservative think tank. This term originated about 1900 as a facetious colloquialism for brain and was given its new meaning about 1950.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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