GOO Meaning of GOO in English goo /ɡuː/ BrE AmE noun [uncountable] informal [ Date: 1900-2000 ; Origin: Perhaps from glue ] an unpleasantly sticky substance ⇨ gooey :My wash bag’s covered in goo. Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012