topple

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topple

[′täp·əl]
(mechanics)
In gyroscopes for marine or aeronautical use, the condition of a sudden upset gyroscope or a gyroscope platform evidenced by a sudden and rapid precession of the spin axis due to large torque disturbances such as the spin axis striking the mechanical stops. Also known as tumble.
References in classic literature ?
And as he reflected, it seemed highly unlikely to him that he would ever permit himself to do anything that might jeopardize his whole life, topple over the structure that decades of work had built.
He only needed a great misfortune to topple him from the high position he held in the world of intellectual excellence, and it came.
Gahan, horrified, saw the latter's head topple from its body, saw the body stagger and fall to the ground.