overspin

In the making of metal strings for musical instruments, to wind or wrap a covering-wire about a string so as to add to its weight and to lower its pitch. Overspun strings are used especially for the lower strings of the pianoforte, the guitar, and several instruments of the zither class.

To spin out to too great length; to protract unduly.

An excessive amount of spin applied to a projectile such that its nose does not turn down at the summit of the trajectory