1.
viola (musical instrument)
A stringed instrument larger than a violin, played with a bow, with a deeper, mellower tone.
ビオラ is the Japanese name for the viola, a bowed string instrument slightly larger than a violin with a deeper, warmer tone.
Related words
The string family, from highest to lowest:
Common collocations
Usage
The same word ビオラ also refers to a flower (viola/pansy). Context makes the meaning clear.