brain fart
noun
Definition of brain fart
chiefly US, informal
: a mental lapse : brain cramp … she stumbled over remembering when Sam was born and even had a brief brain fart where she forgot his name. — Crushable, 26 Sept. 2012
Indulge Your Inner Word Nerd
There's more!
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
1994
First Known Use of brain fart
1994
Seen and Heard
What made you want to look up brain fart? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!