(in baseball 棒球 one of the nine periods of a game in which each team has a turn at batting 局；回合 The Chicago Cubs scored two runs in the first inning. 芝加哥小熊队在第一局拿下两分。 The Chicago pitcher, Alvarez, gave up six runs in three innings. 芝加哥投手阿尔瓦雷斯（Alvarez）在三局比赛中放弃了六局。
Word OriginOld English innung ‘a putting or getting in’, related to in. The current sense dates from the mid 19th cent.