(baseball) one of nine divisions of play during which each team has a turn at bat WordNet 3.0 & Open English WordNet

In baseball, softball, and similar games, an inning is the basic unit of play, consisting of two halves or frames, the "top" and the "bottom". Wikipedia

A segment of a game in baseball and softball Wikipedia Disambiguation

Division of play in sports such as baseball, softball, and kickball, in which each team is on the offense for half the inning Wikidata

A set of balls whose results are added together for scoring purposes. Usually two balls, but only one ball in the case of a strike, and three balls in the case of a strike or a spare in the last frame of a game. Wiktionary

A period of play in which members of a visiting baseball team attempt to hit a baseball pitched by the opposing home team until three players are called out, followed by a similar attempt by members of the home baseball team against the visiting team's pitching. There are nine or more innings in a regulation baseball game. Wiktionary

A period of play in baseball. Wiktionary (translation)

The time during which any party is in possession of power, or enjoying good luck, etc.; a turn of any kind. Wiktionary