1. The side of an object that is opposite its front
   "his room was toward the back end of the hotel";
   - rear, backside
    
2. (computing) the internal implementation part of a hardware or software system, that is not directly seen or used by the user
   "The developer worked on optimizing the database queries in the back end"

Derived forms: back ends

Type of: face, side

Antonym: front end

Encyclopedia: Back end