Proper noun
Dumbuck
A locality near Milton, West Dunbartonshire council area, Scotland (OS grid ref NS4274).
In the late 18th and early 19th centuries hundreds of jetties were built out from the banks between Dumbuck and the Broomielaw quay in Glasgow itself. Source: Internet
This being insufficient, a training wall called the Lang Dyke was built in 1773 on the Dumbuck shoal to stop water flowing over into the southern channel. Source: Internet