Green’s Dictionary of Slang

(US) goods, commodities.

1914		Jackson & Hellyer Vocab. Criminal Sl. 28: Dise [...] Current amongst store burglars, shoplifters, and box-car thieves or ‘rat workers’ mainly. A contraction of merchandise.
1927		C. Samolar ‘Argot of the Vagabond’ in AS II:9 388: A freight is called a drag. Dise-drag (merchandise), silk-drag, coal-drag, fruit-drag and slow drag result from this word.