field: a piece of land cleared of trees and usually enclosed; "he planted a field of wheat" battlefield, battleground, field_of_battle, field_of_honor, field: a region where a battle is being (or has been) fought; "they made a tour of Civil War battlefields" field: somewhere (away from a studio or office or library or laboratory) where practical work is done or data is collected; "anthropologists do much of their work in the field" discipline, subject, subject_area, subject_field, field, field_of_study, study, bailiwick, branch_of_knowledge: a branch of knowledge; "in what discipline is his doctorate?"; "teachers should be well trained in their subject"; "anthropology is the study of human beings" field, field_of_force, force_field: the space around a radiating body within which its electromagnetic oscillations can exert force on another similar body not in contact with it field, field_of_operation, line_of_business: a particular kind of commercial enterprise; "they are outstanding in their field" sphere, domain, area, orbit, field, arena: a particular environment or walk of life; "his social sphere is limited"; "it was a closed area of employment"; "he's out of my orbit" playing_field, athletic_field, playing_area, field: a piece of land prepared for playing a game; "the home crowd cheered when Princeton took the field" plain, field, champaign: extensive tract of level open land; "they emerged from the woods onto a vast open plain"; "he longed for the fields of his youth" field: (mathematics) a set of elements such that addition and multiplication are commutative and associative and multiplication is distributive over addition and there are two elements 0 and 1; "the set of all rational numbers is a field" field, field_of_operations, theater, theater_of_operations, theatre, theatre_of_operations: a region in which active military operations are in progress; "the army was in the field awaiting action"; "he served in the Vietnam theater for three years" field: all of the horses in a particular horse race field: all the competitors in a particular contest or sporting event field: a geographic region (land or sea) under which something valuable is found; "the diamond fields of South Africa" field: (computer science) a set of one or more adjacent characters comprising a unit of information field, field_of_view: the area that is visible (as through an optical instrument) airfield, landing_field, flying_field, field: a place where planes take off and land field: catch or pick up (balls) in baseball or cricket field: play as a fielder field: answer adequately or successfully; "The lawyer fielded all questions from the press" field: select (a team or individual player) for a game; "The Patriots fielded a young new quarterback for the Rose Bowl"