fieldwork

Short definition from Wiktionary

Noun

1. 1
   Work done out in the fields as opposed to that done elsewhere on the farm (e.g., barn, house, outbuildings, office).
2. 2
   Work done out in the real world rather than in controlled conditions.
3. 3
   The collection of raw data in the field, field research, field study, field studies.
4. 4
   A temporary fortification built by troops in the field; a defensive earthwork in the field.