Still in the 19. Century for "Müll" we have both, a neuter and a masculine gender whereas its gender today is masculine. Interestingly it also seems to have had a different meaning than today (trash, ...
german female version of Stelzbock someone told me would be Flittchen - Hussy (eng). Is there an appropriate translation? Imo, Macho and Gigolo doesn't match , to less animal-like and more a ...