Liddell–Scott–Jones: τρῠγο-δίφησις

τρῠγο-δίφησις[δῑ],εως,ἡ,(διφάω)

A. diving into lees,a game in which the players had to dip their heads into a bowl full of lees so as to get something out, Poll. 9.122 , 124 .