Source : Webster's Revised Unabridged Dictionary (1913)

Upspring \Up*spring"\, v. i.
   To spring up. --Tennyson.

Upspring \Up"spring`\, n.
   1. An upstart. [Obs.] ``The swaggering upspring.'' --Shak.

   2. A spring or leap into the air. [R.] --Chapman.