Search Result for "unidentified flying object":
Wordnet 3.0

NOUN (1)

1. an (apparently) flying object whose nature is unknown; especially those considered to have extraterrestrial origins;
[syn: unidentified flying object, UFO, flying saucer]



WordNet (r) 3.0 (2006):

unidentified flying object
    n 1: an (apparently) flying object whose nature is unknown;
         especially those considered to have extraterrestrial
         origins [syn: unidentified flying object, UFO, flying
         saucer]