What does "brown" mean?

Brown: To make brown or dusky. A trembling twilight o'er welkin moves,Browns the dim void and darkens deep the groves. Barlow.

Additional senses

  1. 2.To make brown by scorching slightly; as, to brown meat or flour.
  2. 3.To give a bright brown color to, as to gun barrels, by forming a thin coat of oxide on their surface. Ure.
  3. 4.To become brown.

Sources