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Definition of 'overlay'

See also: overlie 


  1. protective covering consisting, for example, of a layer of boards applied to the studs and joists of a building to strengthen it and serve as a foundation for a weatherproof exterior
       Synonyms: sheathing overlayer


  1. put something on top of something else; "cover the meat with a lot of gravy"
       Synonyms: cover
  2. kill by lying on; "The sow overlay her piglets"
       Synonyms: overlie

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