Strong’s Hebrew
H3799 — katham
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
כָּתַם
katham — pronounced kaw-tham
a primitive root; properly, to carve or engrave, i.e. (by implication) to inscribe indelibly:--mark.
1 occurrence in the KJV.
Jeremiah 2:22
For though thou wash thee with nitre, and take thee much soap, yet thine iniquity is marked before me, saith the Lord GOD.