nutateˈ intransitive verb

1. To nod
2. To droop
3. To perform a nutation

nutāˈtion noun

1. A nodding
2. A fluctuation in the precessional movement of the earth's pole about the pole of the ecliptic (astronomy)
3. The sweeping out of a curve by the tip of a growing axis (botany)
4. The periodic variation of the inclination of the axis of a spinning top (or gyroscope) to the vertical (physics)

nutāˈtional adjective