Nutation

Nutation ( Latin: nod) describes a movement

of the axis of rotation and the figure around the direction of the angular momentum, see nutation (physics)
of angular momentum and axis of the earth, see nutation (astronomy)
of the sacrum, see nutation (anatomy)
of a plant, see nutation (botany)

See also:

Wiktionary: Nutation - explanations of meanings, word origins, synonyms, translations