Navvie is short for navigator Navvie is short for navigator
The Irish labours who built the canal system in England were called navigators, shortened to navvies.
The noun 'navvies' doesn't have its own collective noun. Since navvies were the workmen who built the railroads, a collective noun suitable for workmen will work; a gang of navvies, a crew of navvies, etc.
The Victorian builders.
A lot of navvies
They dug canals.
Irish navvies
Builders
The Hebrews themselves were the builders of the Hebrew civilization. Today they are called Jews.
in Victorian times builders added beer to their plaster mix to make it adhere better especially on mouldings
It was called the Victorian Age as it was the time the Queen Victoria ruled.
In Britain, Queen Victoria ruled, that is why they were called the Victorian days,
a plow