Definitions of field:

• noun:   a particular kind of commercial enterprise

  Example: "They are outstanding in their field"

• noun:   the area that is visible (as through an optical instrument)
• noun:   all the competitors in a particular contest or sporting event
• noun:   all of the horses in a particular horse race
• noun:   (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

  Example: "The set of all rational numbers is a field"

• noun:   (computer science) a set of one or more adjacent characters comprising a unit of information
• noun:   a region in which active military operations are in progress

  Example: "The army was in the field awaiting action"

• noun:   somewhere (away from a studio or office or library or laboratory) where practical work is done or data is collected

  Example: "Anthropologists do much of their work in the field"

• noun:   a piece of land cleared of trees and usually enclosed

  Example: "He planted a field of wheat"

• noun:   a geographic region (land or sea) under which something valuable is found

  Example: "The diamond fields of South Africa"

• noun:   the space around a radiating body within which its electromagnetic oscillations can exert force on another similar body not in contact with it
• noun:   extensive tract of level open land

  Example: "He longed for the fields of his youth"

• noun:   a place where planes take off and land
• noun:   a piece of land prepared for playing a game

  Example: "The home crowd cheered when Princeton took the field"

• noun:   a branch of knowledge
• noun:   a region where a battle is being (or has been) fought

  Example: "They made a tour of Civil War battlefields"

• noun:   a particular environment or walk of life
• verb:   select (a team or individual player) for a game

  Example: "The Patriots fielded a young new quarterback for the Rose Bowl"

• verb:   answer adequately or successfully

  Example: "The lawyer fielded all questions from the press"

• verb:   play as a fielder
• verb:   catch or pick up (balls) in baseball or cricket
• name:  A surname (common: 1 in 9090 families; popularity rank in the U.S.: #1165)