Strong’s Greek
G1942 — epikaluma
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἐπικάλυμμα
epikaluma — pronounced ep-ee-kal'-oo-mah
from 1943; a covering, i.e. (figuratively) pretext:--cloke. see GREEK for 1943
1 occurrence in the KJV.
1 Peter 2:16
As free, and not using your liberty for a cloke of maliciousness, but as the servants of God.