Green’s Dictionary of Slang

(Aus.) the penis.

1991		R.G. Barratt ‘This Isn’t Union Bashing, But...’ in What Do You Reckon (1997) [ebook] Kicking and screaming and with faces longer than King Kong’s wozzer.
1992		R.G. Barrett White Shoes 33: A huge white statue of Michaelangelo’s David stood above a fountain, his wozzer pointing out over the shops.