lawn(n = noun.location) - a field of cultivated and mowed grass;
is a kind of field

1.  An open space between woods. Milton. [1913 Webster]
"“Orchard lawns and bowery hollows.”" [1913 Webster]

2.  Ground (generally in front of or around a house) covered with grass kept closely mown. [1913 Webster]

   A very fine linen (or sometimes cotton) fabric with a rather open texture. Lawn is used for the sleeves of a bishop's official dress in the English Church, and, figuratively, stands for the office itself. [1913 Webster]
"A saint in crape is twice a saint in lawn." [1913 Webster]

lawn, n. a piece of grass kept mown and smooth in a garden, park, etc.

Idiom:
lawn tennis the usual form of tennis, played with a soft ball on outdoor grass or a hard court.

lawn, n. a fine linen or cotton fabric used for clothes.

Derivative:
lawny adj.

Etymology:
ME, prob. f. Laon in France

N  plain, table-land, face of the country, open country, champaign country, basin, downs, waste, weary waste, desert, wild, steppe, pampas, savanna, prairie, heath, common, wold, veldt, moor, moorland, bush, plateau, campagna, alkali flat, llano, mesa, mesilla, playa, shaking prairie, trembling prairie, vega, meadow, mead, haugh, pasturage, park, field, lawn, green, plat, plot, grassplat, greensward, sward, turf, sod, heather, lea, ley, lay, grounds, maidan, agostadero, champaign, alluvial, campestral, campestrial, campestrian, campestrine.

N  agriculture, cultivation, husbandry, farming, georgics, geoponics, tillage, agronomy, gardening, spade husbandry, vintage, horticulture, arboriculture, floriculture, landscape gardening, viticulture, husbandman, horticulturist, gardener, florist, agricultor, agriculturist, yeoman, farmer, cultivator, tiller of the soil, woodcutter, backwoodsman, granger, habitat, vigneron, viticulturist, Triptolemus, field, meadow, garden, botanic garden, winter garden, ornamental garden, flower garden, kitchen garden, market garden, hop garden, nursery, green house, hot house, conservatory, bed, border, seed plot, grassplot, grassplat, lawn, park, parterre, shrubbery, plantation, avenue, arboretum, pinery, pinetum, orchard, vineyard, vinery, orangery, farm, agricultural, agrarian, agrestic, arable, predial, rural, rustic, country, horticultural.

japanese lawn grass, korean lawn grass, lawn bowling, lawn cart, lawn chair, lawn furniture, lawn mower, lawn party, lawn tennis, lawn tool