(baseball) 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.

present participle of inn

Found in the plural forms of a small number of English words. Not productive.

(chiefly non-productive) Of or pertaining to. / Used to form demonyms.

simple past tense and past participle of inn

The quality of being in, or inside.

plural of phone-in

plural of drop-in

plural of check-in

plural of walk-in