τηρητής

οῦ, ὁ
A. keeper, observer, δίκης D.S. 3.4.
2. guard, warden, PMich.Zen. 84.10 (iii B.C.), PLond. 3.1171.57 (i B.C.), PAmh. 2.126.22 (ii A.D.), etc.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project