The term 5TH ANNIVERSARY can be broken down into four crossword solutions: SNICKERS (8 letters), AVES (4 letters), AVE (3 letters), and MCCOO (5 letters). SNICKERS is a brand of chocolate bar made by Mars, Incorporated. AVES is the scientific name for birds, which are a type of vertebrate animal. AVE is a Latin word meaning 'HAIL' or 'GREETING'. MCCOO is an acronym for the five-year anniversary, which stands for 'Married Couple Commitment to One Another'.