Adj. N. A lesbian with power over a small or large group of other lesbians. They are the supreme leaders over said group and create drama when things don't go their way.
A.Porter from UCSC has control over the entire lesbian communities libidos, she is such a Power Dyke.
The ultimate manifestion of a dyke. Including but not limited too; butch hairstyles, extreme masculinity, Tennis shoes paired with dress pants, abssurd excuses for absolutely everything, battle wound from a dog bite, lack of a neck, leather clothing, keys to a harley, nikon watches. Even lesbians dissociate themselves from the "power dyke" species.
I saw that power dyke the other day playing football.