πτερνιστής

οῦ, ὁ
A. one who strikes with the heel or trips up, Ph. 1.84, Tz. H. 9.181; supplanter, Ph. 1.55,al.; f.l. for φροντιστής in Polem.Phgn. 21.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project