κυριακός G2960
kyriakós · koo-ree-ak-os' · Adjective
from κύριος; belonging to the Lord (Jehovah or Jesus):--Lord's.
2 Occurrences in the King James Bible
1 Corinthians 11:20When ye come together therefore into one place, this is not to eat the Lord’s supper.
Revelation 1:10I was in the Spirit on the Lord’s day, and heard behind me a great voice, as of a trumpet,