va-et-vient

Etymology
Borrowed from.

Etymology
From.

Noun

 * 1) comings and goings, toing and froing
 * 2)  back and forth, in and out, up and down, to and fro
 * 3)  two-way switch
 * 1)  two-way switch
 * 1)  two-way switch
 * 1)  two-way switch