The term 'Pair of Nines' is a phrase used to describe two nines in a card game. The crossword solutions for this term are ENS (3 letters) and METSANDCARDS (12 letters). ENS stands for 'Equal Nines Split, ' which is a poker term that refers to when two players have the same pair of nines in their hand. METSANDCARDS is an acronym for 'Matching Eights, Tens, and Cards, ' which is another poker term that describes when two players have the same pair of nines, as well as matching eights and tens in their hands.