An electrical outlet. A typical household has several 120-volt receptacles for plugging in lamps and appliances, and 240-volt receptacles for the range, clothes dryer, air conditioners, etc.
Merriam-Webster Online Dictionary
receptacle (noun)1.
one that and contains something - receives container
2.
New Latin from Latin
a) the end of the flower stalk upon which the floral organs are borne
b) a structure or tissue (as of a fungus or fern) bearing spores or sporangia
3.
a mounted female electrical fitting that contains the live parts of the circuit