γνωστήρ

ῆρος, ὁ
A. one that knows: surety, X. Cyr. 6.2.39, BGU 1032.11: witness to identity, POxy. 496.16 (ii A. D.).
2. inspector, PAmh. 2.139.23 (iv A. D.), PLond. 3.1249.3 (iv A. D.).
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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