Closely and firmly united or packed together; dense: compact clusters of flowers. Occupying little space compared with others of its type: a compact camera; a compact car. Brief and to the point; concise: a compact narration. Marked by or having a short solid physique: a wrestler of compact build. To press or join firmly together: a kitchen device that compacted the trash. To make by pressing or joining together; compose. To consolidate; combine. To be capable of being pressed tightly together or to become so pressed: garbage that compacts easily. A small case containing a mirror, pressed powder, and a powder puff. An automobile that is bigger in size than a subcompact but smaller than an intermediate. An agreement or a covenant. See Synonyms at bargain.