Definition of TAN

  1. (noun)a browning of the skin resulting from exposure to the rays of the sun
  2. (noun)a light brown the color of topaz
  3. (noun)ratio of the opposite to the adjacent side of a right-angled triangle
  4. (verb)treat skins and hides with tannic acid so as to convert them into leather
  5. (verb)get a tan, from wind or sun
  6. (adj)of a light yellowish-brown color