By LAWRENCE FELLOWS
A violin is a stringed instrument, which means merely that it has strings.
You might say a violin is strung if you’re talking about it having been fitted with strings, as must be done, sooner or later, if you are to have a stringed instrument.
If the strings are wound too tight, you might soon have a broken string, which would not please a violinist, especially a high-strung one. If it happens repeatedly, your high-strung violinist might soon be a strung-out one.