From Longman Dictionary of Contemporary Englishgoogoo /ɡuː/ noun [uncountable] informal STICKan unpleasantly sticky substance → gooey My wash bag’s covered in goo.
Examples from the Corpus
goo• His mouth was a m61ange of pineapple and some brown goo.• Green and yellow and red bubbling goo.• There was flammable goo all over the place.• Well, actually, he did spill some kind of goo all over his cravat at the Election-Day lunch at Allegro restaurant.• Crews are working day and night to clean up the goo from the oil tanker accident.• She tasted it and it was sweet and delicious, but it was goo after an hour.Origin goo (1900-2000) Perhaps from glue 