/ ˈkwɪntʊplət; NAmE ; kwɪnˈtjuːplət; -ˈtʌpl-/ (also BrE informal quin ) (also NAmE informal quint ) noun
one of five children born at the same time to the same mother
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WORD ORIGIN
late 19th cent.: from quintuple , on the pattern of words such as triplet .