Green’s Dictionary of Slang

knockabout n.

also knock-around
[knock around v.]

1. [mid-19C] a drinking spree.

2. [late 19C+] (Aus.) a tramp, a vagrant.

3. [late 19C+] (Aus.) a layabout, a low criminal or idler.

4. [20C+] (W.I.) the lowest type of prostitute.

5. [1910s+] a social ‘jack-of all trades’, a ‘regular chap’.

6. see knockabout man n. (1)