migrating, especially of people; migratory. noun. 2. a person or animal that migrates. 3. a person who attempts to permanently relocate to a new country, but who may be subject to removal by the government of that country: undocumented migrants; unaccompanied child migrants. Compare immigrant.
Definition: Columns are a fundamental part of any spreadsheet program such as Excel and Google Spreadsheets. Columns run vertically in a worksheet. Each column is identified by a letter in the column header starting with Column A and running through to Column XFD.
A column is a piece of journalism where the writer expresses his/her own experiences and opinions, with no pretence to the objectivity normally demanded in the profession. A row is what you get into when a reader vehemently disagrees with your opinion or discounts your claimed experiences. Alternatively, in a table (which I assume you're referring to), rows are horizontal collections of items belonging to a certain category; columns are vertical collections.