When a person is so obese that their cankles bow outwards. In moderate cases the outside heel of the shoe becomes excessively more worn than the inside heel. In extreme cases the fibula touches the ground.
Jeff, "Hillary Clinton is so fat and grotesque. I think she was born a man."

Matt, "Yeah I was at her political rally last week and she had the worst case of bowcankles I've ever seen."
by dooshkanew September 2, 2009
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