The term 'DOOR PIECE' can be broken down into two words, 'DOOR' and 'PIECE'. The first word, 'DOOR', refers to an opening in a wall, or a barrier, that allows access from one side to the other. The second word, 'PIECE', refers to a component of a larger object. When combined, the term 'DOOR PIECE' refers to a specific component of a DOOR, which is the HINGE. A HINGE is a mechanical device that connects two parts of a DOOR together, allowing it to open and close.