Green’s Dictionary of Slang

gulley-raker n.

also gully-raker
[? gully (hole) under gully n.2 + SE raker; or play on earlier use of sense 3]

1. the penis.

[UK]Farmer & Henley Sl. and Its Analogues.
[UK]A. Crowley Snowdrops from a Curate’s Garden 20: Your gallimaufry is as sore as my gully-raker will be when you’ve clapped me, and pissing is like passing red-hot needles, and the stricture holds my fuck back till the crisis nearly blows its top off.

2. a womanizer.

[UK]Farmer & Henley Sl. and Its Analogues.

3. (Sth. Aus.) a cattle-thief.

[Aus]Crowe Aus. Sl. Dict. 34: Gully Rakers, cattle stealers.