'Bead proof' definitions:

Definition of 'Bead proof'

From: GCIDE
  • Bead proof \Bead" proof`\
  • 1. Among distillers, a certain degree of strength in alcoholic liquor, as formerly ascertained by the floating or sinking of glass globules of different specific gravities thrown into it; now ascertained by more accurate meters. [1913 Webster]
  • 2. A degree of strength in alcoholic liquor as shown by beads or small bubbles remaining on its surface, or at the side of the glass, when shaken. [1913 Webster]