0 an area in a field of corn where the corn has been made flat in a regular pattern, often a circle or series of circles, which people sometimes believe has been done by aliens (= creatures from a different planet):
The only time you normally see so many people entering a wheat field is to look for corn circles.
Wiltshire's Marlborough Downs became home to the world's corn circle phenomenon.
Corn circle artists have been leading UFO enthusiasts and little green men theorists a merry dance for years.
