Milko

From milk + -o("diminutive suffix").

Full definition of milko

(plural milkos)

1998, August 15, Seagrass, Lousy Milk , Actually, having been denied the right to employment in my chosen occupation, makin' chemicals, and being now a milko, i can give you the inside information on this story.
1998, December 17, David Bennetts , Neutral Bay tram line , In the resulting commotion dogs barked and the milko's horse shied, leaving broken bottles and spilt milk all over Hayes St.
2001, March 11, Brash, Multiculturalism leaves no place for Australian culture , (As a child, I used to love hearing the "clip clop clip clop" of the milkoâ€²s horse as he arrived in our street in the morning).