noun, plural boo-boos. Slang.
Origin of boo-boo
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|Jon Favreau|May 27, 2014|DAILY BEAST
"There's nothin' to boo-boo for," he said, with a half-affected brusqueness.A Waif of the Plains|Bret Harte
"'Boo-boo' was the exception that proves the rule," answered Jack hotly.What Timmy Did|Marie Adelaide Belloc Lowndes
British Dictionary definitions for boo-boo
noun plural -boos
Word Origin for boo-boo
Word Origin and History for boo-boo
"mistake," 1954, apparently a reduplication of boob, which had acquired a secondary sense of "foolish mistake" (1934).