Lewis Short
internundĭnĭum | internun-dĭnum (noun N) : and , , inter-nundinae
* The space of time between two nundinae, Mar. Victorin. p. 2469 P.: quoties rusticus internundino barbam radiebat, Varr. ap. Non. 214, 28; Macr. S. 1, 16, 34.
Charlton T. Lewis, Charles Short, A Latin Dictionary