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Webster 1913 Edition
Uhlan
Uh′lan
,Noun.
 [G. 
uhlan
, Pol. ulan
, hulan
, from Turk. oglān 
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.