Khaki meaning : A dull, yellowish-brown colour, the colour of dust. Khaki green, a dull green colour. A strong cloth of wool or cotton, often used for military or other uniforms. A soldier wearing a khaki uniform. A British person (from the colour of the uniform of British troops, originally in the Second Boer War; compare rooinek). (In this sense the plural generally is khakies.) Khaki clothing or uniform, commonly in the plural. Dust-coloured; of the colour of dust.