@complete: Plain Old CLR Objects. These are .NET classes stripped down to bare bones, without inclusion of the Entity Framework (EF) namespaces and overhead. They are one of a few options for what generated code you desire EF to create as proxies for your database entities (tables).

http://blogs.msdn.com/b/adonet/archive/2009/05/21/poco-in-the-entity-framework-part-1-the-experience.aspx

Sacha Barber is a prolific community member:

http://www.codeproject.com/Articles/316068/Restful-WCF-EF-POCO-UnitOfWork-Respository-MEF-1-o

Use NuGet to look for Entity Framework templates for POCO proxy generation...