SIB


Meaning of SIB in English

/ sɪb; NAmE / noun

( biology ) a brother or sister

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WORD ORIGIN

Old English related by birth or descent , of unknown origin. Modern senses date from the late 19th and early 20th cents.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.