nūtātĭo — Lewis & Short
nūtātĭo, ōnis, f.id. (post-Aug.).
I A nodding:
capitis,Plin. 11, 37, 49, § 135. —
II A swaying.
A Lit.:
frequens et in utramque partem nutatio,Quint. 11, 3, 129.—
B Trop., a shaking, tottering:
nutatio reipublicae,Plin. Pan. 5, 6.