Definition of "upspring"

upspring¹

/ʌpˈspɹɪŋ/

verb
third-person singular simple present upsprings, present participle upspringing, simple past upsprang or upsprung, past participle upsprung
1. (intransitive) To spring up, rise up, originate, come into being.
  Quotations
  In diamond light upspring the dazzling peaks Of Pyramids
  1829, Alfred, Lord Tennyson, Timbuctoo
  Might not its waters upspring in this new land, whose discovery was the great marvel of the age, and which men looked upon as the unknown east of Asia?
  1879, Charles Morris, Historical Tales

upspring²

/ˈʌpspɹɪŋ/

noun
plural upsprings
1. (obsolete) An upstart.
  Quotations
  the swaggering upspring
  c. 1599–1602 (date written), William Shakespeare, “The Tragedie of Hamlet, Prince of Denmarke”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act I, scene iv]
2. A spring or leap into the air.
3. origin