1 definition by Viper211

An early colonial American unit of length that has made a recent return to golf lingo. A JD is roughly equal to 0.039 inch, 0.991 Joel dick, or 1mm in the International System of Units (SI).
If that putt was 2 JD's to the right, I'd have made a birdie!
by Viper211 June 20, 2011