khaki
noun
[ ˈkɑːki ]
• a strong cotton or wool fabric of a dull brownish-yellow colour, used especially in military clothing.
• "he was dressed from head to toe in khaki"
• a dull greenish or brownish-yellow colour.
• "a pair of khaki Bermuda shorts"
Origin:
mid 19th century: from Urdu khākī ‘dust-coloured’, from khāk ‘dust’, from Persian.