Uhlan Uh"lan, n. [G. uhlan, Pol. ulan, hulan, from Turk. ogl[=a]n a youth, lad; of Tartar origin.] [Written also ulan, and formerly hulan.] 1. One of a certain description of militia among the Tartars. 2. (Mil.) One of a kind of light cavalry of Tartaric origin, first introduced into European armies in Poland. They are armed with lances, pistols, and sabers, and are employed chiefly as skirmishers.