nūtātĭo, ōnis, f. [nuto] (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.