Meaning of SIDEBAR in English

SIDEBAR

/ ˈsaɪdbɑː(r); NAmE / noun

1.

a short article in a newspaper or magazine that is printed next to a main article, and gives extra information

2.

a narrow area on the side of a web page that is separate from the main part of the page

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