A farm is a plot of land that's used for growing food crops or raising livestock. A dairy farm might have cows and fields of grass for them to eat.
Some farms consist of barns or other buildings, greenhouses, and fields. Small farms often grow a variety of vegetables and raise small numbers of animals such as egg-laying hens and dairy goats. Large farms frequently focus on one crop and operate like factories. To work on a farm is to farm. In the 15th century, to farm was "to rent land," from the Anglo-French ferme, "a lease," from the Latin firmare, "to fix, settle, or strengthen."