Entry 3 senses · 2 variants Webster, 1913 Upspring · Up·spring · IPA /ʌpˈspɹɪŋ/ v. i. n. 01 v. i. To spring up. 1. To spring up. 02 n. An upstart. 1. An upstart.[Obs.] 2. A spring or leap into the air.[R.]