orchestra
n.n. a large group of musicians playing many different instruments together, such as violins, trumpets, and drums. An orchestra is usually led by a conductor and plays classical music.
n. a large instrumental ensemble, typically classical, comprising string, woodwind, brass, and percussion sections, and directed by a conductor. Noun, countable.
The orchestra plays beautiful classical music.
He has played the violin with the national youth orchestra for three years now.
The score required every section of the orchestra to perform with a precision that left no room for error, from the quietest passage to the final booming chord.
Via Latin orchēstra, itself lifted from Ancient Greek ὀρχήστρα (orkhḗstra), the space where dancers moved in the Greek theatre; the noun is formed from the verb ὀρχέομαι, "to dance".