Definitions for "Breadboard"
A test board on which components are mounted to test the feasibility of prototype circuitry.
It is a circuit which is assembled on an insulating surface, usually with solderless contacts, where the components can be easily replaced for circuit alteration and experimentation.
The preliminary assembly of an instrument or system. The process continues with brassboard prototype, engineering model, and then flight model.
A proof-of-concept modeling technique that represents how a product will work, but not how a product will look.