What does alcoholometer or alcoholmeter mean?
The definition of alcoholometer and alcoholmeter
Al`co*hol*om”e*ter, Al`co*hol”me*ter, n.
Etym: [Alcohol + -meter.] (Chem.)

An instrument for determining the strength of spirits, with a scale graduated so as to indicate the percentage of pure alcohol, either by weight or volume. It is usually a form of hydrometer with a special scale.