A term used to describe a female who has her black thong very visible. Term taken from a black tail deer.
Whoa, checkout that black tail over there.
by Almighty_AL May 04, 2006
the best pistol in resident evil 4
wow, even my blacktail isn't hurting him (this quote would indicate a lack of any weakness on the part of the target rather than a lack of power on the part of the blacktail)
by Snowman McKnives May 01, 2005