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.
A weir is a channel at the entry to or exit from a distillation tray. 1  Outlet weirs maintain a desired liquid level on the tray.Liquid is introduced to the top tray by a pipe distributor or weir.A weir is a channel at the entry to or exit from a distillation tray.