(Verb) The act of reading a text very quickly in order to get a first impression or the general gist of the text.
(Noun,plural) Document or audio-visual material that provides information about a topic. Examples of sources include: books, journals, magazines, newspapers, websites, dictionaries, audio and video clips.
(Noun) The subject or item of discussion in an academic text, e.g. a paragraph, an essay, a report, a presentation.