\Kha"ki\ (k[aum]"k[-e]), a. [Hind. kh[=a]k[=i], lit.,
dusty, dust-colored, fr. Per. kh[=a]k dust.]
Of a dull brownish yellow, or drab color; -- applied to
cloth, originally to a stout brownish cotton cloth, used in
making uniforms in the Anglo-Indian army.
Note: In the United States service the summer uniform of
      cotton is officially designated khaki; the winter
      uniform of wool, olive drab.

\Kha"ki\, n.
Any kind of khaki cloth; hence, a uniform of khaki or,
rarely, a soldier clad in khaki. In the United States and
British armies khaki or cloth of a very similar color is
almost exclusively used for service in the field.