(slang, US) April 15, tax day in the United States.
2017, "Alastair Paterson ", Beware the Ides of April - Cybercriminals and Tax Season (in Security Week)
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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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