Top definition
A very muscular butt that is lacking in roundness. The person who has a horse butt is very physically fit, but their butt does not make you say "dat ass".
Chad: dude, Catalina is so fine!
Gavin: yeah, but she has a horse butt.
by manhole13 November 03, 2013
Get the mug
Get a horse butt mug for your dog GΓΌnter.