Group  —n. 1 number of persons or things located close together, or considered or classed together. 2 number of people working together etc. 3 number of commercial companies under common ownership. 4 ensemble playing popular music. 5 division of an air force etc. —v. 1 form or be formed into a group. 2 (often foll. By with) place in a group or groups. [italian gruppo]