- a stupid or silly mistake; blunder.
- a minor injury.
Origin of boo-boo
An Americanism dating back to 1950–55; baby talk
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for boo-boo
And unlike the speech I delivered in 2003, you managed to finish without describing people who solve problems as “Boo-Boo Fixers.”Read Jon Favreau’s Full Commencement Address to College of the Holy Cross
May 27, 2014
- informal an embarrassing mistake; blunder
C20: perhaps from nursery talk; compare boohoo
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for boo-boo
"mistake," 1954, apparently a reduplication of boob, which had acquired a secondary sense of "foolish mistake" (1934).
Online Etymology Dictionary, © 2010 Douglas Harper