A directory that is not stored on-disk but is only conceptualized in a specific program (e.g. an IDE). May also refer to virtual directories in webserver configurations.
A directory that is not stored on-disk but is only conceptualized in a specific program (e.g. an IDE). The IDE might for example show the directory as folder in the project hierarchy.
May also refer to virtual directories in webserver configurations, for example in IIS, Apache or Nginx.
Please use the virtual-host tag if you are not specifically asking about virtual directories in a webserver context.