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English definition of “sibling”


noun [C] uk   /ˈsɪb.lɪŋ/ formal us  
C2 a brother or sister: I have four siblings: three brothers and a sister. There was great sibling rivalry (= competition) between Peter and his brother.Family relations in general
(Definition of sibling from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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