"What's the plural of banjo?"

The plural of banjo is banjos.

Definition of banjo:

A stringed musical instrument with a body resembling a drum or tambourine and a long neck, played by plucking or strumming the strings.

Single Examples:
1. He played a beautiful melody on his banjo during the folk music concert.
2. The musician showcased their skills on the banjo in the live performance.
3. She strummed the strings of her banjo to create a rhythmic sound.
Plural Examples:
1. At the music store, I saw a collection of different banjos on display.
2. During the bluegrass festival, multiple artists played their banjos on stage.
3. They formed a band with two guitarists, a bassist, and two banjo players.