Meaning of YOLK in English

YOLK

/ jəʊk; NAmE joʊk/ noun

[ C , U ] the round yellow part in the middle of an egg :

Separate the whites from the yolks.

—picture at egg

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WORD ORIGIN

Old English geol(o)ca , from geolu yellow .

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