Green’s Dictionary of Slang

dabble n.

[ironic use of SE]

1. (UK Und.) stolen property.

[UK](con. 1900–30) A. Harding in Samuel East End Und. 282: Dabble – Stolen property.
[UK]Partridge DSUE (8th edn).

2. a (small) bet.

[Aus]J. Byrell Lairs, Urgers & Coat-Tuggers 308: [He] was very partial to a dabble on the dishlickers.