1. A judge or embracer who takes bribes from both sides in a dispute.

2. A lawyer who abandons the party that he or she initially represented in a dispute to represent the opposing party in the same suit.

3. A person who engages in double-dealing.

“Ambidexter is he that, when a matter is in suit between men, takes money of the one side and of the other, either to labour the suit, or such like; or if he be of the jury, to give his verdict.” William Rastell, Termes de la Ley 28 (1st Am. ed. 1812).