Webster’s Revised Unabridged Dictionary · 1913
Sunburn
Sun′burn′ (·bûrn′), 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.
Sun′burn′, n. The burning or discoloration produced on the skin by the heat of the sun; tan.