Source : Webster's Revised Unabridged Dictionary (1913)

Sunburn \Sun"burn`\, v. t. [imp. & p. p. {Sunburned}or
   {Sunburnt}; p. pr. & vb. n. {Sunburning}.]
   To burn or discolor by the sun; to tan.

         Sunburnt and swarthy though she be.      --Dryden.

Sunburn \Sun"burn`\, n.
   The burning or discoloration produced on the skin by the heat
   of the sun; tan.

Source : WordNet®

sunburn
     v : get a sunburn by overexposure to the sun [syn: {burn}]

sunburn
     n 1: a browning of the skin resulting from exposure to the rays
          of the sun [syn: {tan}, {suntan}, {burn}]
     2: redness of the skin caused by exposure to the rays of the
        sun [syn: {erythema solare}]