n. an error. (See also make a boo-boo.) : It's only a small boo-boo. Don't stress yourself.
n. a hurt; a cut; a bruise. : She has a little boo-boo on her knee.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
Cite This Source
Word Origin & History
boo-boo
"mistake," 1954, apparently a reduplication of boob, which had acquired a secondary sense of "foolish mistake" (1934).