alley cat noun 4verb 1forms 3 noun4 •An urban feral cat. •(humorous, figurative) A sexually promiscuous person, especially a woman. •(humorous, figurative) A (female) prostitute. •An informal bicycle race with checkpoints. verb1 •(slang) Synonym of cat around (“to engage in sex with various partners”). formsalley catted · alley catting · alley cats