Alpha - (Webster's 1828 Dictionary)
AL'PHA, n. [Heb. an ox, a leader.]
The first letter in the Greek alphabet, answering to A, and used to denote first or beginning.
I am Alpha and Omega. Rev 1.
As a numeral, it stands for one. It was formerly used also to denote chief; as, Plato was the Alpha of the wits.