Maestro (noun)

1. A master or highly skilled professional in a particular field, particularly in music, art, or teaching.
2. A respected and accomplished conductor of an orchestra.

Origin:

From italian maestro, from latin magister ("master"), from magis ("more") + -ter ("comparative suffix").

Examples:

1. He was a maestro of the violin.
2. The maestro led the orchestra through a beautiful performance.
3. He studied under the maestro for many years.
4. The maestro had a reputation for being very demanding.
5. The young musician hoped to become a maestro one day.