From Longman Dictionary of Contemporary Englishfield tripˈfield trip noun [countable] SEan occasion when students go somewhere to learn about a particular subject, especially one connected with nature or science a geography field trip
Examples from the Corpus
field trip• They are completely without inhibition, a bus fall of preteens on a field trip.• Kerin and classmates were on a field trip from Horizon Middle School in Ferndale, about 150 miles north.• Teachers have organized a field trip to a recycling factory.• Students can now see a field trip, the descriptions and the student reports.• When the students return from the field trip, Emily is dismayed when Gina does not get off the minibus.• In middle school, your children would rather attend your execution than have you attend their field trip.• Most of my companions on this field trip to the mines are from the Third World. 