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black box warning

(US) A warning, surrounded by a black border, affixed to a prescription drug to indicate that it may cause serious or life-threatening effects.

ˈblæk ˈbɑks ˈwɔɹnɪŋ33 viewsLast reviewed Jun 29, 2026+ Add a definition
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#1·Apr 27, 2026

(US) A warning, surrounded by a black border, affixed to a prescription drug to indicate that it may cause serious or life-threatening effects.

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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.

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