A ball game played with a bat and ball between two teams of nine players; teams take turns at bat trying to score runs WordNet 3.0 & Open English WordNet

Baseball is a bat-and-ball sport played between two teams of nine players each, taking turns batting and fielding. Wikipedia

Bat-and-ball sport played between two teams, usually of 25 players each. Wikipedia Disambiguation

American-originated sport in which teams compete to score runs by hitting a thrown ball and advancing around bases Wikidata

A bat-and-ball sport played between two teams usually of nine players each. OmegaWiki

A sport common in North America, the Caribbean, and Japan, in which the object is to strike a ball so that one of a nine-person team can run counter-clockwise among four bases, resulting in the scoring of a run. The team with the most runs after termination of play, usually nine innings, wins. Wiktionary