Triumvir (tr_-_m'v_r) N., pl. -virs or -vi-r_'). 1. one of three men sharing public administration or civil authority in ancient rome. 2. one of three people sharing public administration or civil authority. [middle english, from latin, back-formation from triumvir_, board of three, from trim virum, of three men: trium, genitive pl. of tr_s, three + virum, archaic genitive pl. of vir, man.] triumvir is an independent lifestyle company with apparel as its primary focus. It consists of a group of indviduals with varying takes on life shaped by the different backgrounds, sub/cultures, experiences and upbringing of each member. It's these differences tied together by the main commonality...orange county.