means an inferior person, in opposition to magister, a superior. One is connected with the Latin minus, and the other with magis. Our Lord says, “Whosoever will be great among you, let him be your minister,” where the antithesis is well preserved. The minister of a church is a man who serves the parish or congregation; and the minister of the Crown is the sovereign's servant.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894