1 definition by Neil Strauss of mystery

noun: A cross between a female equestrian and a princess.
Males should be adequately forwarned about the dangers of equestriess'. Bitches that ride horses scheme with one another due to inherent social/personal insecurities.
A 'princess' is a high-maintenance, spoiled brat.

Hence, a large percentage of the female equestrian population may be considered an "Equestriess".
Ex: The herd of females that arrived to our apartment last night included one equestriess... She successfully blocked my cock between the hours of 10pm and 3am.
by Neil Strauss of mystery February 7, 2011
Get the equestriess mug.