1.NounAnything not readily explainable appearing to move through or be suspended in the air."The lights seen over the city last night, originally termed unidentified flying objects, turned out to be spotlights from a car dealership reflecting on low clouds.; She said that the unidentified flying object then turned around, zoomed to a higher altitude, and loitered briefly before speeding off."
2.NounSuch things as seem to be discrete objects and comparable to aircraft."She said that the unidentified flying object then turned around, zoomed to a higher altitude, and loitered briefly before speeding off."