名詞 olive drab:

1. a dull greyish to yellowish or light olive brown
   同義詞：drab
2. military uniform of the United States army; made from cloth of a dull olive color
   同義詞：olive-drab uniform
3. a cloth of an olive-brown color used for military uniforms

形容詞 olive drab:

1. of a light brownish green color
   同義詞：olive-drab, drab