Green’s Dictionary of Slang

1. a worn-out prospector.

1988		(ref. to 1860s) McGill Dict. of Kiwi Sl. 97/2: scrousher old, rundown goldminer, c.1862.
2003		McGill Reed Dict. of N.Z. Sl. [as cit. 1988].

2. a prostitute.

1959		D. Niland Big Smoke 32: Look at them scroushers up there now.
1959		D. Niland Gold in the Streets (1966) 210: You scrousher, you tart.
1966		Trimble 5000 Adult Sex Words and Phrases.

3. see scroucher n.