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Irish twin
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
Originally used (in the nineteenth century) to mock the fertility of Irish families, referencing the stereotype that they have children in quicker succession.
Pronunciation
en En-au-Irish twin.ogg AU
Noun
en rare slang offensive Either of a pair of siblings born less than 12 months apart, especially if born within the same calendar year or school year or born one year apart.
en Catholic twin
en 2014 Karyn Gerrard His Wicked Celtic Kiss Simon and Schuster 9781440583872 I'm the oldest, my brother, Dylan, is the next oldest—my Irish twin.” “Irish twin?” “He's ten months younger, what is referred to sarcastically as an Irish twin. My parents still live in the same flat in Dublin I grew up in. I haven't been home much the last twelve years or so. How about you, darlin'?”
en Family members Siblings