(baseball) The seventh, eighth, and ninth innings of a game.

(baseball) Happening in the ninth inning of a baseball game. / (idiomatic) Happening as late as possible, eleventh-hour.

(baseball, usually in the plural) An additional inning of play required to break a tie.

plural of change of innings

(baseball) A more extended than usual break taken between the top half and the bottom half of the seventh inning.

plural of seventh inning stretch

(historical) The Waldenses; so called from their peculiarly cut or marked sabots, or shoes.