boo-boo

['bu:bu:]
  • n. 错误，疏忽；大错，愚蠢的错误（俚语）；轻伤
boo-boo
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英文词源

boo-boo (n.)
"mistake," 1954, apparently a reduplication of boob, which had acquired a secondary sense of "foolish mistake" (1934).