(slang) Siblings born within twelve months of each other.
“Aunt Sissy!” a young voice screeched, then Sissy was besieged by five kids who looked barely a year apart. What his mom would call Catholic Twins.
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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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