- a neuron in the brain.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for brain cell
Brain-cell discharges will hardly account for the phenomena of clairaudience.Second Sight
The top-heavy youth closed his magazine and unlocked a brain-cell.The Promise
James B. Hendryx
A bone-cell cannot receive an impression, nor originate an idea, any more than a brain-cell can secrete bile.Embryology
Gerald R. Leighton
It is worse than no use to think of what one is writing; that wakes one up, goads every brain-cell into unwholesome activity.Dangerous Ages
I use this word, not to be found in my dictionaries, as expressing the brain-cell power corresponding to electricity.Over the Teacups
Oliver Wendell Holmes, Sr.