LAT

Lewis Short

tuxtax, an exclamation imitative of the sound of blows:
* Tuxtax meo tergo erit,Plaut. Pers. 2, 3, 12; cf. Naev. ap. Charis. 2, p. 185 P. (Com. Fragm. v. 6 Rib.), tax pax.
Charlton T. Lewis, Charles Short, A Latin Dictionary
memory