n.

1. a piece of land cleared of trees and usually enclosed
   
   • he planted a field of wheat
2. a region where a battle is being (or has been) fought;
   battlefield, battleground, field of battle, field of honor
   
   • they made a tour of Civil War battlefields
3. 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
4. a branch of knowledge;
   discipline, subject, subject area, subject field, field of study, study, bailiwick, branch of knowledge
   
   • in what discipline is his doctorate?
   • teachers should be well trained in their subject
   • anthropology is the study of human beings
5. the space around a radiating body within which its electromagnetic oscillations can exert force on another similar body not in contact with it;
   field of force, force field
6. a particular kind of commercial enterprise;
   field of operation, line of business
   
   • they are outstanding in their field
7. a particular environment or walk of life;
   sphere, domain, area, orbit, arena
   
   • his social sphere is limited
   • it was a closed area of employment
   • he's out of my orbit
8. a piece of land prepared for playing a game;
   playing field, athletic field, playing area
   
   • the home crowd cheered when Princeton took the field
9. extensive tract of level open land;
   plain, champaign
   
   • they emerged from the woods onto a vast open plain
   • he longed for the fields of his youth
10. (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
11. a region in which active military operations are in progress;
    field of operations, theater, theater of operations, theatre, theatre of operations
    
    • the army was in the field awaiting action
    • he served in the Vietnam theater for three years
12. all of the horses in a particular horse race
13. all the competitors in a particular contest or sporting event
14. a geographic region (land or sea) under which something valuable is found
    
    • the diamond fields of South Africa
15. (computer science) a set of one or more adjacent characters comprising a unit of information
16. the area that is visible (as through an optical instrument);
    field of view
17. a place where planes take off and land;
    airfield, landing field, flying field

v.

1. catch or pick up (balls) in baseball or cricket
2. play as a fielder
3. answer adequately or successfully
   
   • The lawyer fielded all questions from the press
4. select (a team or individual player) for a game
   
   • The Buckeyes fielded a young new quarterback for the Rose Bowl