Wiktionary
bull dyke
n. (context pejorative slang English) A macho or an extremely masculine or butch lesbian
Usage examples of "bull dyke".
Backstopping them: Deputy Dot Rothstein, 200 + pounds of bull dyke with the hots for my friend Chris Staples.
I could have put up with her being gay, but she was a real bull dyke, more macho than a guy really, with a skin like the surface of the moon, and hip measurements in treble figures, and a beer-gut spilling over her leather belts.
She was suspected of shanking a bull dyke at the Hall of Justice Jail.
Then the poor girl would start to have problems: a bull dyke hitting on her, demanding her body or her life.