The term 'Decks in the Ring' is a phrase used to describe a rap battle, where two rappers face off against each other in a lyrical competition. The crossword solutions for this term are KAYOS (5 letters) and KOS (3 letters). KAYOS is an acronym for 'Knockin' At Your Own Skillz', which is a phrase used to describe the competitive nature of a rap battle. KOS stands for 'King of the Streets', which is a title given to the winner of a rap battle.