βαθύρρους
From LSJ
ψυχῆς ἀγῶνα τὸν προκείμενον πέρι δώσων → to stand the appointed trial for his life, to stand the appointed struggle for life and death
ους, ουν :
ion. βαθύρροος, οον;
au courant profond.
Étymologie: βαθύς, ῥέω.
(see also: βαθύρροος) deep-flowing