Electra

Electra, the daughter of Agamemnon and Clytemnestra, who, with her brother Orestes, avenged the death of her father on his murderers.

Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)

Electra * Electric Light
[wait for the fun]
Elbœuf
Elburz
Elder
Eldon, John Scott, Lord
El Dorado
Eleanor
Eleatics
Election, The Doctrine of
Electors, The
Electra
Electra
Electric Light
Electricity
Elegy
Elemental Spirits
Elements
Elephant
Elephant, Order of the White
Elephanta
Elephantiasis
Elephantine