from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. Simple past tense and past participle of sproing.
Sorry, no etymologies found.
Ok...the book I just finished working on was a couch with unruly giant springs that sproinged into your skin suddenly and without warning.
For the second time tonight I've sproinged out of bed and for the same reason.
At every step the wood handles at either end bounced and the big blade hummed and sproinged like the music of a Jew's harp.