A woman whose pubic hair is large and unkept. A big bush.
I was gonna go down on Lucy last night 'till I discovered she had the retro muff going on..
by Fat Nik April 22, 2003
female vaginal hair styled and coiffed to no shorter than one inch and no longer than two inches, bucking the trend of brazilian waxes and kojak-style genital trims;
I miss the old days before all chicks wanted to be porn stars, that's why I like Mary and her friends; they all have retromuffs.
by JuanChangstein November 29, 2011