Longman Dictionary of Contemporary English
The Collaborative International Dictionary
boo-boo \boo-boo\ n.
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an embarrassing mistake.
Syn: blunder, blooper, bungle, foul-up, flub, botch, boner, misdoing.
a minor injury, such as an abrasion on the skin; -- child's talk.
Douglas Harper's Etymology Dictionary
"mistake," 1954, apparently a reduplication of boob, which had acquired a secondary sense of "foolish mistake" (1934).
Wiktionary
alt. 1 (context colloquial often childish English) A mistake or error. 2 (context colloquial childish by or to young children English) A minor injury, such as a cut or a bruise. 3 (context colloquial childish by or to young children English) feces. n. 1 (context colloquial often childish English) A mistake or error. 2 (context colloquial childish by or to young children English) A minor injury, such as a cut or a bruise. 3 (context colloquial childish by or to young children English) feces. vb. (context colloquial childish by or to young children English) To defecate.
WordNet
Wikipedia
Boo-Boo is the debut EP from Boston band Big Dipper. The EP was remastered and released as part of Merge Record's Supercluster: The Big Dipper Anthology set in 2008.
Usage examples of "boo-boo".
This is not some teensy boo-boo, but a scandal of monstrous dimensions.
My name is Kristy Thomas and I'm thirteen and in eighth grade And there are two other members of the Brewer/Thomas household - Shannon, who is David Michael's puppy (she's a Bernese mountain dog), and Boo-Boo, Watson's cat.
And we have a Bernese mountain dog puppy named Shannon, a fat old cat named Boo-Boo, and several other pets, including a puppy we are training to be a guide dog.
Now they have a Bernese mountain dog named Shannon, plus Watson has this old, fat cat named Boo-Boo.
So it's a pretty full house right now, especially when you throw in Shannon, the Bernese mountain dog puppy, and Boo-Boo, the fat, mean, geriatric cat.
Boo-Boo had kindly shared with her the early-morning report of the very bizarre destruction of a television station in the northwestern United States.