Adnuo

From TTT

Latin-English

ădnŭ|ō, -ĕre, -ī, adnūtum. (ˈad.nu.o) v. intrans.

1. To nod to smth.
2. To give the nod to smth (to give assent, as by a nod).
3. To indicate by a nod.

[ad + *nuo (nuto).]