It was considered dÃ©classÃ© to refer to one's own townhouses, estates or villas (or those of friends) as mansions and modern etiquette books still advise that the terms house, big house or great house be used instead.
Waste weir. A waste weir on a navigable canal is a slatted gate on each canal level or pound, to remove excess water and to drain the canal for repairs or for the winter shutdown.
Weirs and barrages are different types of ârunâofâriverâ dams, this means that while they raise the water level upstream they create only a small reservoir (âhead pondâ) and cannot effectively regulate downstream flows. A weir is normally a low wall of stone, concrete or wicker.