κερματιατής, -οῦ, ὁ (κερματίζω, to cut small, coin into small money), a money changer: Jhn.2:14.† (AS)
Thayer:
1) a money changer, money brokerIn the court of the Gentiles in the temple of Jerusalem were the seats of those who sold such animals for sacrifice as had been selected, examined, and approved, together with incense, oil, and other things needed in making offerings and in worship; and the magnitude of this traffic had introduced the banker's or broker's business.
κερματιστής
kermatistēs
ker-mat-is-tace'
From a derivative of G2772; a handlerofcoins, that is, moneybroker