of Glasgow. A sort of Seven Dials, or Scottish Alsatia. The Scotch use dubbs for a filthy puddle. (Welsh, dwb, mortar; Irish, doib, plaster.)
“The Guse-dubs o' Glasgow: O sirs, what a huddle o' houses, ... the green middens o' baith liquid and solid matter, soomin' wi' dead cats and auld shoon.” —Noctes Ambrosianae.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894