κατασείω
Infl. fut. -σείσω
I. "to shake down, throw down", Thuc.
II. κατασεῖσαι τὴν χεῖρα "to shake or make a motion" of the hand; so, κ. τὰ ἱμάτια, by way of signal, Plut.; but also, κ. τῇ χειρί "to beckon" with the hand, NTest.: absol., κατασείειν τινί "to beckon" to another, as a sign for him to be silent, Xen.