Answer:
Mechanical furniture refers to furniture items that have a mechanical mechanism or feature integrated into their design. This can include furniture that has movable parts, such as reclining chairs or sofa beds, as well as furniture pieces that have built-in storage compartments that can be accessed through mechanical mechanisms like hinges, lifts, or slides. The term mechanical furniture emphasizes the functional aspect and the added convenience or versatility that these mechanical features provide. This approach to design favored devices that give an object more than a single or fixed use.