What is the English translation of the Italian word 'lei'?

"She" and "(formal singular) you" are English equivalents of the Italian word lei.

Specifically, the word is a personal pronoun. It may be translated into English as either the third person singular pronoun "she" or the second person singular pronoun "you" in its formal form. Either way, the pronunciation will be a very rapidly articulated "leh-ee" in Italian.