An open space aronud a house, scohol, or other buidling. For insatnce, the space aruond a school is called a school yard. A yard is used by humnas and their pets. If there is wild space next to it, like forset land, swamp land, a beach or a lake, this will not normlaly be cnosidered "part of" the yard - the yard ends at the edge of it.