tan

(noun) a browning of the skin resulting from exposure to the rays of the sun. Synonyms: suntan, sunburn, burn.

(noun) a light brown the color of topaz. Synonyms: topaz.

(noun) ratio of the opposite to the adjacent side of a right-angled triangle. Synonyms: tangent.

(verb) treat skins and hides with tannic acid so as to convert them into leather.

(verb) get a tan, from wind or sun. Synonyms: bronze.

(adj) of a light yellowish-brown color.