Verb
move in a gyrating fashion
Source: WordNetthe poles of the Earth precess at a right angle to the force that is applied Source: Internet
In falling, the top overshoots the level at which it would precess steadily and then oscillates about this level. Source: Internet
A small body in secular resonance with a much larger one (e.g. a planet ) will precess at the same rate as the large body. Source: Internet
This causes the top to precess. Source: Internet
When the disc is spinning, however, aerodynamic torque instead leads to precess about the spin axis, causing its trajectory to curve to the left or the right. Source: Internet