A temporary fortification built by troops in the field; a defensive earthwork in the field.
The collection of raw data in the field, field research, field study, field studies.
Work done out in the fields as opposed to that done elsewhere on the farm (e.g., barn, house, outbuildings, office).
Work done out in the real world rather than in controlled conditions
A fortified place; a large and permanent fortification, sometimes including a town; for example a fort, a castle; a stronghold; a place of defense or security.
A position that, if obtained by the weaker side, will prevent penetration by the opposing side, generally achieving a draw.
To furnish with a fortress or with fortresses; to guard, to fortify.