Green’s Dictionary of Slang

1. an effeminate or homosexual man, a coward, a weakling.

1989		First Hand 40: ‘Get the hell out of here, pansy ass,’ he snarled.
2001		Robards & Kane Wait until Dark 44: What are you, some sort of pansy-ass? Come on, we can’t let them get away.
2004		L. Jackson Morning After 359: Cliff Siebert was a pansy-ass and a hothead. Smart enough, but flawed.

2. a ‘feminine’ lesbian.

2008

D. Cassidy Accidental Werewolf 132: She’d once called her a pansy-ass for not knocking some guy’s teeth out who’d looked down her shirt.