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 low barrier which is built across a river in order to control or direct the flow of water. 2. countable noun. A weir is a wooden fence which is built across a stream in order to create a pool for catching fish.