field

noun:an open area of land, especially one used for pasture or crops
- The farmer planted corn across the field.
noun:a particular branch of study
- She is a leading expert in the field of neuroscience.
noun:a space on a form or in a database where information is entered
- Please fill out your name in the first field of the online form.
verb:to select or deploy someone for a task or contest
- The party decided to field a new candidate for the election.