Strong’s Greek
G930 — basanistes
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
βασανιστής
basanistes — pronounced bas-an-is-tace'
from 928; a torturer:--tormentor. see GREEK for 928
1 occurrence in the KJV.
Matthew 18:34
And his lord was wroth, and delivered him to the tormentors, till he should pay all that was due unto him.