1. a type of traditional Mexican folk music typically performed by a small group of musicians
2. a musician who performs mariachi music, or a group of such musicians

Examples

• The mariachi band played at the wedding reception.
• She loves listening to mariachi music on the radio.
• The restaurant featured live mariachi performances every Friday night.
• He learned to play guitar in a mariachi group.
• The mariachi wore traditional charro suits with silver buttons.
• The festival celebrated Mexican culture with mariachi and folk dancing.
• A mariachi serenaded the couple on their anniversary.