λᾱϊκ-ός · laik-os — LSJ
of, from the people, unofficial, civilian
of or from the people: hence, unofficial, civilian, PLille 10.4 (iii B. C.), PStrassb. 93.4 (ii B. C.).
2 common, holy
common (opp. consecrated), of bread, Aq., Sm., Thd. 1 Ki. 21.4(5); of a place, opp. holy, Sm., Thd. Ez. 48.15.
II layman
as Subst., layman, opp. κληρικός, Cod.Just. 1.1.3.2, 1.3.38.2, Just. Nov. 6.5.