The term 'Liquor Potency' refers to the strength of an alcoholic beverage, which is measured in terms of its alcohol content. The crossword solution for this term is 'PROOF, ' which is a unit of measurement used to determine the alcohol content of a beverage. It is expressed as a number that is twice the percentage of alcohol by volume. For example, a beverage with an alcohol content of 40% would be labeled as 80 PROOF.