What are swing eight notes in jazz?

Swing eighth notes in jazz refer to a rhythmic interpretation of eighth notes where they are played in a uneven, syncopated manner, often resembling a triplet feel. Instead of being played evenly, the first eighth note is emphasized and held longer, while the second is shortened, creating a "long-short" pattern. This style gives jazz its characteristic swing feel, encouraging a more relaxed and fluid groove. Musicians often adjust the swing ratio based on the tempo and context of the piece.