Short for man-ankle. Usually used in the context of fashion, specifically when referring to the ankles of a man wearing no socks, and pants which are tailored shorter than is traditional. This style is popular among fashion-forward and/or metrosexual men.
When I was walking to class today, I saw a hipster guy in übertight pants, flashing some mankle as he walked.
by CowManCheeseBall June 09, 2014