Green’s Dictionary of Slang

a park-keeper.

1941		J.G. Rothenberg ‘Peanuts! The Pickle Dealers’ in AS XVI:3 Oct. 188: Parky, Johnny Greenleaf. A park attendant.
1943		R. Llewellyn None But the Lonely Heart 51: The parkie was standing outside the lodge.
1970		Manchester Guardian Weekly 23 May 10: I have seen many an old pensioner, bending to touch the petals of a fine gladiolus, jump back full of alarm and guilt as he saw the parkies’ tell-tale armband appear.
1971		T.C. Bambara ‘Raymond’s Run’ in Gorilla, My Love (1972) 28: The parkees unfolding chairs.
1972		(con. 1960s) R. Price ‘Big Playground’ in Antaeus Aut. 39: Big Playground was deserted except for the parky in his olive uniform.
1974		(con. 1960s) R. Price Wanderers 6: Big playground was deserted except for the parky in his olive uniform.
1985		Viz Comic: The Big Hard No. 2 81: I’m the parkie. I wear the fuckin’ uniform round here.
1994		I. Welsh ‘A Smart Cunt’ in Acid House 179: The great killer for the parkie [...] was boredom.
2002		D. Flusfeder Gift 305: I blagged this off a parkie.
2019		A. Parks February’s Son 138: ‘The parkie saw him this morning, called it in’.