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Tinker's dam. A tinker's dam is a temporary patch to repair a hole in a metal vessel such as a pot or a pan. It was used by tinkers and was usually made of mud or clay, or sometimes other materials at hand, such as wet paper. The material was built up around the outside of the hole, so as to plug it.
dam. barrier, commonly across a watercourse, to hold back water, often forming a reservoir or lake; dams are also sometimes used to control or contain rockslides, mudflows, and the like in regions where these are common. Dams are made of timber, rock, earth, masonry, or concrete or of combinations of these materials. special type of water-retaining structure is the sectional navigation dam. To erect such a dam, buttresses of steel beams are set up on a flat apron during the summer low-water period. Bridges are laid along the buttresses, and gates of simple design rest against the buttresses.