[ oh-ver-bangk ]
/ ˌoʊ vərˈbæŋk /
verb (used without object) Horology.
to have the balance staff oscillate so greatly that the fork of the lever fails to engage, rendering the escapement inoperative.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for overbank
In spite of this the model runs very actively and will overbank if wound up very far.The Auburndale Watch Company|Edwin A. Battison