In municipal law and administration. A strip of land, lying either in the middle of the street or in the space between the building line and the sidewalk, or between the sidewalk and the driveway, intended to be kept as a park-like space, that is, not built upon, but beautified with turf, trees, flower-beds, etc. See Downing v. Des Moines, 124 Iowa, 289, 99 N. W. 1006.