Having a long face similar to that of a horse, or having other characteristics of a horse's face. Often used as a term to insult women by men with a penis the size and shape of a baby mushroom.

Antonyms: Be Best.

A male who has recently lost his best friend and has anger/temper issues.
In most cases, this male is named 'Jean'.

A person that has the bady of a human and the face of a horse

Jean Kirchein from the Anime Attack on titan is sometimes reffered to as "horse face"

A trick ass ho wif dem crooked teef and dat longass face. dayum.

Gary Busey had been diagnosed with horse face syndrome about a decade ago, there are many more who have horse face syndrome and haven't been diagnosed yet.

A girl you who add's you on myspace. Then you look at her pictures and she has a fucked up grill and is wearing red lipstick looking like a transvestite and shit, she also has a fat cunt of a mole on her face