field

1 a small area of usually open land <a field that is the frequent site of neighborhood softball games> Synonyms clearing, ground, lot, parcel, plat, plot, tract Related Words common(s), croft [chiefly British]; grass, green, greensward, lawn; glade, grassland, heath, heathland, lea (or ley), meadow, moor, pasture, pastureland

2 a region of activity, knowledge, or influence <the first woman to enter the field of medicine> Synonyms area, arena, bailiwick, barony, business, circle, demesne, department, discipline, domain, element, fief, fiefdom, firmament, front, game, kingdom, line, precinct, province, realm, specialty, sphere, terrain, walk Related Words frontier; study, subject; territory, turf; occupation, profession, pursuit, racket, vocation; ambit, amplitude, breadth, compass, confine, dimension(s), extent, ken, reach, scope, sweep, width; subfield, subspecialty

3 a part or portion having no fixed boundaries <if you set your camera lens to small aperture, the field of sharp focus will be quite large> Synonyms area, demesne, region, zoneRelated Words corner, section; locale, locality, location, locus, place, point, position, site, space, spot

4 a place where a battle takes place <the field where two mighty armies met and changed the course of history> Synonyms battleground, battlefieldRelated Words battle line, front, front line, ground; beachhead, bridgehead, foothold; killing field

5 a place from which aircraft operate that usually has paved runways and a terminal <Worsham Field in Corpus Christi used to be home to a sizable crop dusting operation> Synonyms aerodrome [chiefly British], airdrome, airfield, airportRelated Words air base, air park, helipad, heliport, jetport; airstrip, landing field, landing strip, runway; launchpad, pad

6 a wide space or area <the cemetery's field of crosses for the war's fallen seemed to stretch to infinity> Synonyms breadth, distance, expansion, extent, expanse, length, plain, reach, sheet, spread, stretch, wasteRelated Words domain, sphere, territory; compass, range, scope, sweep; gamut, scale, spectrum; depth, emptiness, void; extension, latitude, span; amplitude, immensity, magnitude

7 active fighting during the course of a war <in the classroom the general had been a brilliant theoretician, but in the field he proved to be a wholly incompetent tactician> Synonyms action, battle, combatRelated Words attack, fire, firefight, pitched battle, single combat; hostilities, operations, warfare; duty, service