Definition of E
As sin abbreviation, this letter may stand for “Exchequer,” “English,” “Edward,” “Equity,” “East,” “Eastern,” “Easter,” or “Ecclesiastical.” A Latin preposition, meaning from, out of, after, or according. It occurs In many Latin phrases; but (in this form) only before a consonant.
That's the definition of E in Black's Law Dictionary 6th Edition. Courtesy of Cekhukum.com.