Definition of "Sol"

Sol¹

/sɒl/

proper noun
1. (poetic, science fiction) The Sun, the star orbited by the Earth.
2. (Roman mythology) The sun god; equivalent of the Greek Helios. Brother of Luna and Aurora.
3. (Norse mythology) The sun goddess.
4. (nonce word) A male given name
  Quotations
  Sol (named after the solar eclipse on the day of his birth) was born in March 2015 with an undetected clot in his upper left arm.
  2017 March 1, Marc Waddington, “How dad’s bionic arm invention is changing son’s life & prosthetics”, in Daily Post, № 51,073, page 6/2
5. (obsolete, alchemy, chemistry) Gold.

Sol²

/sɒl/

proper noun
1. A diminutive of the male given name Solomon.
  Quotations
  “Chock full o’ science,” said the radiant Captain, “as ever he was! Sol Gills, Sol Gills, what have you been up to, for this many a long day, my ould boy?”
  1846 October 1 – 1848 April 1, Charles Dickens, Dombey and Son, London: Bradbury and Evans, […], published 1848