Hi,
It sounds like mesh is what the Cisco APs were doing in your explination.
Yes you can have more than 1 connected with a wire. It's always best to use a cable whenever possible (a wired connection is always better than a mesh connection), so do try to keep the number of meshed AP down to a minimum in your design.
Here is a best practices guide that might be useful: http://community.cambiumnetworks.com/t5/cnPilot-E-Series-Enterprise-APs/Best-practices-when-deploying-WiFi-Mesh/td-p/61413