Definify.com
Webster 1913 Edition
Viola
‖
Vi′o-la
,Noun.
 [L., a violet. See 
Violet
.] (Bot.) 
A genus of polypetalous herbaceous plants, including all kinds of violets. 
 Vi′o-la
,Noun.
 [It. See 
Viol
.] (Mus.) 
An instrument in form and use resembling the violin, but larger, and a fifth lower in compass. 
‖
Viola da braccio 
[It., viol for the arm]
, the tenor viol, or viola, a fifth lower than the violin. Its part is written in the alto clef, hence it is sometimes called the 
– ‖alto
. Viola da gamba 
[It., viol for the leg]
, an instrument resembling the viola, but larger, and held between the knees. It is now rarely used. 
– ‖Viola da spalla 
[It., viol for the shoulder]
, an instrument formerly used, resembling the viola, and intermediate in size between the viola and the viola da gamba. 
– ‖Viola di amore 
[It., viol of love: cf. F. 
, viole d’amour
]a viol, larger than the viola, having catgut strings upon, and brass or steel wires under, the keyboard. These, sounding sympathetically with the strings, yield a peculiarly soft and silvery sound. It is now seldom used.