brain truster
noun
a member of a brain trust; an important but usually unofficial adviser.
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Origin of brain truster
First recorded in 1930–35; brain trust + -er1
Words nearby brain truster
brain sugar, brain swelling, brainteaser, Braintree, brain trust, brain truster, brain up, brainwash, brainwashing, brain wave, brainwork
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020