A field on which a game, especially a ball game, is played. / (figuratively) Any place or context within which competitive activity takes place, such as market competition between companies.

(radio, telecommunications) The storage and retrieval of data using tags attached to individual packages, animals or people; the tags contain an integrated circuit to store and process the data, an...

(transitive, obsolete) To cause to ferment

(organic chemistry) Any compound that has one HCl group for each two amine groups