Wingspread is a house designed by architect Frank Lloyd Wright for Herbert Fisk Johnson, Jr. and built in 1938-1939 near Racine, Wisconsin. The living room is the centre of the home, and four wings extend from it to four "zones": the master bedroom, the children’s rooms, the kitchen and servants' quarters, and the guestrooms/garage. The living room resembles a gigantic wigwam, and features a tall stone multiple fireplace rising from its centre.

distance between the tips of the wings (as of a bird or insect) when fully extended

linear distance between the extremities of an airfoil