Bridge Cygnus Dragon 16' electric viola, Victoria Plum. Squeeze your thumb against the side of the viola to hold it in place. Keep your thumb on the left side of the neck closest to the C string. Slide your left hand from the base of the neck toward the scroll, or the top of the neck near the tuning pegs. Hook your left thumb around the back of the viola’s neck. What does viola expression mean? Definitions by the largest Idiom Dictionary. Definition of viola in the Idioms Dictionary. While the most common scent is of honey, some varieties are different, such as Viola ' Alice Kate ,' with sherbet yellow flowers and a scent. Viola hybrids, as the name suggests, offer many varieties which can be striped, splashed, bicolored, or the solid colors of white, yellow, peach, pink, mauve, purple, and blue.