Bible Dictionaries
Master Vibrator

Webster's Dictionary

In an internal-combustion engine with two or more cylinders, an induction coil and vibrator placed in the circuit between the battery or magneto and the coils for the different cylinders, which are used without vibrators of their own.

Bibliography Information
Webster, Noah. Entry for 'Master Vibrator'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​m/master-vibrator.html. 1828.