outlet
Synonym discussion
Sense: noun/5
For this sense, 'outlet' is the everyday American word for the place in a wall where electricity comes from. 'Socket' is the closest general word and is more common in British English, especially when people speak casually. 'Wall socket' makes the location clearer, but the meaning stays the same. 'Power point' is common in British and Australian English, but it sounds unusual in American English. 'Receptacle' is a technical word used by electricians, manuals, or safety rules rather than in daily speech. In ordinary American use, say Plug the lamp into the outlet. In a wiring guide, you might read Replace the damaged receptacle in the kitchen wall.
Etymology
Outlet was formed in English from out and let, linked to the older idea of letting something out. It first referred to a physical opening where water, air, or something else could leave, and later spread to figurative uses such as a way to release feelings, a store that sends goods out to buyers, and a media organization that sends news out to the public.