A breadboard is a versatile, solderless platform used for building and testing electronic circuits. It consists of a grid of interconnected metal clips covered by a plastic casing, allowing components such as resistors, capacitors, LEDs, and integrated circuits to be easily inserted and connected without soldering. Breadboards typically feature terminal strips for placing components and bus strips along the sides for distributing power and ground. They are widely used in electronics prototyping, experimentation, and education because they allow circuits to be quickly assembled, modified, and tested.