Hail Mary 
/-ˈmeri/ noun
plural ∼ Marys /-ˈmeri/ noun [count] 1 : a Roman Catholic prayer to the Virgin Mary 2 American football : a long forward pass thrown into or close to the end zone as playing time runs out
▪ He threw up a Hail Mary at the end of the first half. ▪ a Hail Mary pass
▪ He threw up a Hail Mary at the end of the first half. ▪ a Hail Mary pass
