jam session

noun

: an often impromptu performance by a group especially of jazz musicians that is characterized by improvisation

Examples of jam session in a Sentence

Recent Examples on the Web

Castle Rat have begun some preliminary planning and writing for their next album, piling up new riffs at jam sessions. — Steve Appleford, SPIN, 29 June 2026

Separated by decades of time and distance and different lines of work, the members decided to get back together for an informal jam session two summers ago in Seattle, where McCaffrey lives. — Chris Placek, Chicago Tribune, 27 June 2026

Susanna Hoffs, a singer and guitarist, responded to an ad the sisters placed for a female musician, which led to a garage jam session in Hoffs' parents' basement, per the Los Angeles Times. — Alexandra Schonfeld, PEOPLE, 26 June 2026

The extended jam sessions — of which there were plenty — are Clariday’s favorite parts of seeing the band live. — Joseph Hernandez, Kansas City Star, 25 June 2026

Word History

Etymology

jam entry 3

First Known Use

1931, in the meaning defined above

Rhymes for jam session

• accession
• aggression
• compression
• concession
• confession
• depression
• digression
• discretion
• expression
• impression
• obsession
• oppression

Kids Definition

jam session

noun

: an informal performance by a group of musicians (as jazz musicians) who often invite visitors to join in