The capacity for work or vigorous activity; vigor; power. The capacity of a physical system to do work. energy. The capacity or power to do work, such as the capacity to move an object (of a given mass) by the application of force. Energy can exist in a variety of forms, such as electrical, mechanical, chemical, thermal, or nuclear, and can be transformed from one form to another.
Freebase (0.00 / 0 votes) Rate this definition: Switch. In electrical engineering, a switch is an electrical component that can break an electrical circuit, interrupting the current or diverting it from one conductor to another.
Definition of bait and switch. 1  1 : a sales tactic in which a customer is attracted by the advertisement of a low-priced item but is then encouraged to buy a higher-priced one. 2  2 : the ploy of offering a person something desirable to gain favor (as political support) then thwarting expectations with something less desirable.