Firefly
A small insect that makes its own light — a brief, self-produced signal in summer dark.
A firefly in a dream is the dream's image of a small insect that makes its own light. The signal is brief, repeated, and entirely self-produced. The dream brings the firefly when something in your life — a small kindness, a flash of insight, a single sentence in a long evening — is shining for a moment without depending on any larger source. A field of fireflies seen in summer is the dream affirming that small lights add up. A firefly caught in a jar, with the light dimming, is the dream noting that the small living signal has been captured for display, and the conditions that allowed it to shine are no longer being given.