Strong’s Greek
G3612 — oikema
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
οἴκημα
oikema — pronounced oy'-kay-mah
from 3611; a tenement, i.e. (specially), a jail:--prison. see GREEK for 3611
1 occurrence in the KJV.
Acts 12:7
And, behold, the angel of the Lord came upon him, and a light shined in the prison: and he smote Peter on the side, and raised him up, saying, Arise up quickly. And his chains fell off from his hands.