Crossword Dictionary

outlet 

wall socket, wall plug, electric outlet, electrical outlet, outlet, electric receptacle - n 
receptacle providing a place in a wiring system where current can be taken to run electrical devices 

wordplays

An electrical outlet or receptacle, frequently called a wall outlet, is a socket that connects an electrical device to an electricity supply. In buildings, electrical outlets are usually installed in the wall, although they can also be installed in the floor. Occasionally, they are found in the ceiling for powering devices such as garage door openers or neon signs in storefront windows. Different countries often have different outlet types and voltages. Adapters are available to convert between the different types.

simple.wikipedia