Noun
Painting executed in size or distemper, on canvas or walls, -- formerly, frequently taking the place of tapestry.
An hydraulic apparatus, or a system of works or fixtures, by which a supply of water is furnished for useful or ornamental purposes, including dams, sluices, pumps, aqueducts, distributing pipes, fountains, etc.; -- used chiefly in the plural.
Source: Webster's dictionary