company āļāļ·āļāļāļ°āđāļĢ company āļāļ·āļāļāļ°āđāļĢ A group of persons. See Synonyms at band2.One's companions or associates: moved in fast company; is known by the company she keeps. A guest or guests: had company for the weekend. The state of friendly companionship; fellowship: was grateful for her company; friends who finally parted company. A business enterprise; a firm.A partner or partners not specifically named in a firm's title: Lee Rogers and Company. A troupe of dramatic or musical performers: a repertory company. A subdivision of a military regiment or battalion that constitutes the lowest administrative unit. It is usually under the command of a captain and is made up of at least two platoons.A unit of firefighters.A ship's crew and officers. See Usage Note at collective noun.To accompany or associate with.